alluvial gold mining process

alluvial gold, alluvial gold mining, alluvial mining for gold

alluvial gold, alluvial gold mining, alluvial mining for gold

The principle of Alluvial Gold mining beneficiation is to maximize the recovery rate of gold and the associated heavy minerals from gangues firstly, and then separate gold from the associated heavy minerals by joint mining solutions such as gravity separation, flotation, amalgamation, magnetic separation and electrostatic separation.

Alluvial gold processing solution mainly applies for processing alluvial gold with large volume of gangue minerals. Alluvial gold processing is a set of mining process including crushing and screening, desliming stage, separating stage, etc.

Many alluvial gold ores contain cementing mud pie and most of its particle size is over 100 mm, which will be excluded together with waste rock in the process of screening if not being crushed, thus is a loss of goldVibrating screenand trommel are the commonly used screening equipment, which has long service life and high processing capacity.

Material less than 0.1mm almost don not contain gold in alluvial gold ore, which is known as floating gold and is difficult to be recovered in the seperating process. Moreover, the gold and sludge will be confused in the seperating process, particularly in mechanical seperating process. Therefore, in alluvial gold mining process, this kind of sludge mainly be eliminated. Popular Desliming equipment is off-the-mud bucket.

Practice has proved that gravity separation is the most effective and economical alluvial gold processing method. Due to the different size distributed among alluvial gold, different alluvial gold processing equipment has various of effective size limitations, so a reasonable alluvial gold separating process should apply several gravity separation equipment to jointly operate.

XinhaiJigtapered slide valve, which has lower failure rate of 80%, lower energy consumption and can meet different separating process, increase processing capacity by more than 35%. And its also characterized by easy operation of stroke and frequency with the use of high-tech; smaller covering space while larger handling capacity per unit area.

Xinhai improved the traditional6s concentrating table, bed-type cam lever to change the slider position on the rocker arm can adjust stroke, the leather belt of smooth motor is to adjust jig frequency. Advantages: easy stroke adjustment; smoothly bed running; compact structure; lower power consumption.

This process characterized by simple process, lower cost in equipment, easy operation, What is more, the mining process is environmental protection, the tailings can be directly discharged, which greatly reduce the overall processing plant cost in civil engineering.

50tph alluvial gold mining process in ghana- jxsc machine

50tph alluvial gold mining process in ghana- jxsc machine

JXSC has been focusing on mining equipment manufacturing since 1985. Products: rock crushers, gravity separator, electrostatic separator, flotation machine, washing equipment, ore feeder, screen & sieve, etc. Application: metallurgical, mineral processing, sand making, aggregate processing, etc. Contact us for quotation

Notes: 1. Services (installation, test run, training) : the supplier can provide basic drawings and schematic drawings of equipment installation. The domestic technicians will be provided for free to guide installation and debugging, and the buyer will provide technicians with room and board. The buyer shall prepare necessary auxiliary materials for installation. 2. Quality guarantee: the equipment is guaranteed for one year. In the warranty period, due to the quality of the product manufacturing, manufacturers free warranty (except wearing parts).

alluvial mining methods

alluvial mining methods

As it is my opinion that deep alluvial mining methods in Victoria and in the Murray Flats in New South Wales arepractically in theirinfancy, and considering that we, the old school, of alluvial miners, who have thirty or forty years experience to guide us, must in the natural order of things hand over the management of our mines to the younger and less experienced generation of miners, I thought that as our Association has been formed for the purpose of disseminating information and the exchange of ideas, a few notes on the practical working of alluvial mines might be of some service to aspirants for the position of mining manager.

The greatest difficulty the alluvial miner has to contend against is the immense quantity of water contained in the drifts overlying the wash in the gutters or ancient river beds, and to cope with this water successfully and economically is the point to be aimed at by our mining managers; and if they thoroughly understand this part of their business in all its details, they will not only win kudos for themselves, but will be the means of saving large sums of money to the companies they represent, and, in many instances, will make a success of a venture which otherwise might be stopped for want of funds before it is properly proved.

At the present time, although we have had over forty years experience in draining the deep leads of the colony, I regret to say that a large amount of ignorance still prevails amongst both directors and managers as to the best means to be adopted to tap the water in the mine and raise it to the surface. We will take the question of machinery first, and I may say that I have been pleased to see during the last five years that a start has been made to supplement the old one cylinder pumping engines with compound condensing engines; the first one put in in the colony being by the Chalks No. 3 Company at Carisbrook, where with a 20 in. lift in each end of the shaft (size 15 ft. x 6 ft.; two winding compartments 6 ft. x 3 ft. in the middle and plunger chamber 2 ft. x 18 ft. for 25 ft. in depth, and 26 ft. 6 in. for 35 ft. in depth), the water has been pumped 30 per cent, cheaper than any other class of engine, including the Cornish Beam, has ever pumped water in the Creswick or Maryborough district. The high-pressure cylinder is 16 in. and the low-pressure 28 in. dia., 4 ft. stroke, with horizontal condenser. There are three Cornish boilers 26 ft. x 6 ft. 6 in., working at a pressure of 110 lbs. per square inch, which gives ample steam to raise the water 270 feet.

This class of engine has been improved upon by the Spring Hill and Central Leads Company in the Creswick district, and by the Duke United and Victorian Gold Estates in the Maryborough district with very satisfactory results. The Spring Hill and Central Companys engines consists of three cylinders, 11, 16 and 30 inch diameter, 5 feet stroke, horizontal condenser: It is supplied with steam by three Cornish boilers, 26 ft. x 6 ft. 6 in., working at a pressure of 140 lbs. per square inch, and is designed to work two 18 in. lifts to a depth of 500 feet. To show the advantage of the triple expansion engine, compared with the old class of single cylinder without a condenser, I may slate that some years ago the Lord Harry Company, at Allandale, had a 26 in. non-condensing engine working an 18 in. lift of pumps on a 7 ft. stroke, 9 strokes per minute, to a depth of 600 feet, and they burnt 90 cords of firewood per -week. Whereas, the Spring Hill and Central Companies worked an 18 inch and a 15 inch lift same stroke and same speed, about 340 ft. deep, and consumed 30 cords of firewood per week, or, in other words, did nearly the same duty at one-third of the expense.

As fuel is becoming a very expensive item, every manager should do all that lies in his power to encourage the substitution of high-pressure condensing engines in place of those so long and expensively used in our deep mines.

The old Cornish Beam has still a few advocates who claim superior advantages for it over the horizontal engine, the principal of which are the greater length of stroke and the small amount of wear and tear on the working parts. These must be admitted, but it also has its disadvantages compared with the triple expansion engine, which are, a larger consumption of fuel to a given amount of work and the expense of a separate driver in each shift to attend to it, as it is in a house to itself and requires careful watching when running at a high rate of speed. The matter of first cost is also in favour of the triple expansion.

As to the question of the best means of draining our deep leads, I may say that our most experienced managers agree that it is not advisable to cut the water in sinking, if it can be avoided, except in basaltic rock where the water can be brought away free from sediment and without danger to the shaft. In that case it can be pumped more cheaply, as it would not require to be lifted so high as it would be were this water tapped after the mine had been opened up. But, of course, the quantity of water in basaltic rock is always an unknown factor before the shaft is started.

What should be aimed at, and which is of paramount importance in laying down the plan for opening up an alluvial mine, is to carefully locate by boring the position of the deepest channel of wash, also both banks of the old river, and note the depth of drift and gravel overlying the wash, as the quantity and pressure of water likely to be encountered depends largely upon the amount of drift met with. While mentioning drift, I may say that experience has taught us that frequently that which appears to be sandy clay in a bore has given as much trouble in sinking a shaft as heavier bodies of drift.

I can safely say that all our managers and directors who have had experience in sinking a shaft through drift country, are agreed that the cheapest and safest course to pursue is to select a site for a shaft on either one side of the gutter or the other (the side having the steepest reef or bank being preferable, if possible, as the distance to be driven would be shorter), and clear of all drift, as immense sums of money have been expended in sinking through drifts from 50 to 100 feet thick, and in some cases, shafts have had to be abandoned and large and expensive machinery removed owing to the impossibility of surmounting the difficulties presented by the boiling nature of the drift.

The matter of driving a few or many hundred of feet is of little consequence, and will cost infinitely less than sinking a shaft through more than 10 or 15 feet of drift, which, however, can generally be accomplished with a properly constructed drift box. As I have never seen a description of a sinking box in print, I think it is well to give a short account of one. The box is formed to suit the size of the shaft being sunk, and should be made large enough to admit another box inside of it which would be the ordinary size of the shaft, as the first box might become immovable before the required depth be attained. The box to be made of steel plate three-quarter to an inch thickness according to size of shaft; depth of plate to be 3 feet; the sides to be in two pieces, joined together by a vertical plate about 12 in. x 1 in. riveted to one part and bolted to the other with 7/8 bolts and rivets ; the end to be in three pieces, the two corner pieces to be, say, two feet wide, to be riveted to the sides with 4 in. angle iron ; the centre piece of end to be bolted to the corner pieces with 4 in. angle iron, another piece of angle iron being riveted to corner piece; a 4 in. angle iron to be riveted all round within three inches of the bottom of box, and timber 16 in. x 6 in. to be bolted, with 7/8 bolts 18 in. apart, on top of angle iron, on which to place screw or hydraulic jacks; all rivets to be 7/8 and placed not more than 4 in. apart, and countersunk at back of box. Bolted all round on top and at the back of this box, is a plate 3 ft. 6 in. x in., with 7/8 bolts 9 in. apart, butted close at the corners. This part of box stands up behind the slabbing of shaft, the slabs being cut to fit close up to the plate so as to prevent the drift finding its way between the plate and the slabs. Plates the full depth of box, if procurable, make the best job. The sides, all complete with corner pieces forming the ends, can be lowered into the shaft in one piece and placed in position ; the two end pieces then sent down and are bolted to corner pieces and the box is complete, with the exception of strong centre pieces, which should not be overlooked.

The depth of lead having been ascertained by boring, and about 20 feet added in case there should be deeper ground between the bores, the shaft should be sunk sufficiently in the bed-rock to allow for a rise in the bottom of main level of about two inches in each hundred feet, and permit of the lead being worked, say, a mile down the lead or to the boundary if less than a mile. I have found that the above fall is sufficient to provide a good road for the trucks travelling each way. It also serves as a good water lodgment when the road is laid properly, and does not form a man-trap for the workmen in the manner that drives driven at a steeper gradient do in wet alluvial mines, as there might be enough water in the chamber to drown a man, when the drive a few hundred feet from the shaft would be clear of water; it also means that all the silt would find its way back to the shaft instead of settling along the main level, where it could be easily and cheaply removed.

In addition to the under level in our deepest and most difficult alluvial mines, an upper level should be constructed in the bed-rock, for three very important reasons. First, to provide an escape for the men in case the mine should be flooded; secondly, as a return air course; thirdly, to tap the water by boring, at a higher level, where the pressure would naturally be lightest.

Many years ago it was considered the correct thing to drive in the wash and meet the water in the face, or to put up small rises or bleeders ; but this course proved so disastrous in many cases when going into a gutter for the first time, that this system has been abandoned by all managers of experience in favour of a series of tubed bores from the back of the drive up to the wash. I may say that boring for water in this manner is a matter that requires some experience and a good deal, of care, but the precautions necessary to be taken depend somewhat upon the nature of the bed-rock through which it is intended to bore. Unless the country is hard, from 5 to 10 feet of 4 inch tubing is forced with a jack into a hole bored slightly smaller than the tube. The tube is then wedged round tightly at the back of the drive. A hole is then bored with a smaller augur or bit, just large enough to admit a 3 inch square thread tube, the joints of which have been fitted to run easily, and the leading tube made egg end, leaving an opening at the top end of about 1 inch. The tube should also be perforated with holes for about 3 feet from the top, so as to act as a filter when the tube has been forced up into the wash. The best length of tube is 5 feet, with a few shorter lengths for matchings. A large nut is screwed on to the male end of tube to protect the bottom thread while the tube is being forced. It is necessary, in soft country especially, to exercise great care not to bore the hole too large for the tube, as the water would then get outside the tube, and should there be much pressure, the water would scour the hole large enough to permit an inburst of sand. By this system of tubing, in anything like firm country the water can be drawn off in quantities equal to the capacity of the pumps ; and should anything happen to the machinery necessitating a stoppage, it would be found that part at least of the tubes could be locked without fear of causing the water to flow outside instead of inside the tubes. But we know that the best laid schemes of mice and men ang aft aglee, so it is necessary to make provision so that should an inburst of water and sand be met with unexpectedly, the pumps may be protected from being starved by sand. This is done by constructing strong locks or doors at intervals along the drive. The ground is cut out about 2 feet into the sides, back and bottom of the level, and a heavy frame set, with two centre pieces in it, placed in the excavation, and boarded up close on each side. A door about 6 inches thick, and lined with iron in some cases, is hung with strong hinges in such a way that a man can close it easily behind him. These doors are not made air tight, as the compressed air in case of an inrush of water would blow them out. But experience has shown that where there are a number of these doors along a level, a large accumulation of sand may be found between the doors nearest the face, but the sand will not as a rule reach the pumps. But in case the unexpected were to happen and the men should leave the mine hurriedly and forget to close the doors, it is as well when fixing the pumps to make provision to turn the plunger into a drawlift, where the plunger is fixed on a level with the bottom plat, by inserting immediately above the top clack, and under a bottle piece to receive a drop clack (working barrel to be placed immediately over the latter), a casting about 2 ft. 6.in. high and about the same width as the H piece, one half of which projects towards the end of the shaft and contains a valve, equal in area to the other valves, with short rose piece directly under. A lever is attached to spindle of valve and fixed in such a way that strong rod, with rigid joints, can be attached to the end of lever and continued up the shaft above water level. In case the lift should get starved, this valve could be raised sufficiently to allow the lift to take its water above the level of the cap-piece of chamber. Then all that would be required would be to lower a drop clack into bottle, piece, and the drawlift rod in the usual way, and then pump the water down to the level of the cap. The rose would then be taken off and a hose attached long enough to unwater the mine.

When the mine has been drained, or at least the great pressure of water taken off, and not till then is it practicable to open up the gutter in a systematic and profitable manner; but managers have frequently found it difficult to convince directors and shareholders of this fact, so that they have been forced to drive into the wash, with disastrous results to all concerned.

A short crosscut should be driven off the main level at a point outside the deepest run of wash, and a door hung near the opening. A rise should then be constructed near the end of the crosscut and opened out in bedrock, the back of the drive being slightly above the level of the deepest wash proved by boring over the back of the main drive. About twelve feet from the top of the rise or jump-up, another door should be hung, so that in case of a rush of water the men could close the door and so be enabled to descend the jump-up safely.

As soon as the water is sufficiently reduced so that the successful opening of the mine is placed beyond a doubt, permanent jump-ups maybe constructed off the back at the main level in the usual manner.

It is from this stage onwards that the knotty question of ventilation demands the attention of the management. But if two levels have been brought in from the main shaft, and the upper one connected with the pump shaft only, and powerful blowers and large air pipes (larger the better) supplied, I have no fear of the air proving very troublesome. Provided that, as the mine is opened up, an air drive be driven on the course of, well back from, and on a level with, the lead, and connected with each jump-up by a crosscut, so that the natural current of air will have a free course along the bottom level and up the last jump-upthe others all being covered with doorsand then diverted with canvas brattices to every working face and then back through one of the crosscuts to the air course. If the natural current is not sufficient, a powerful exhaust fan should be connected with the upcast shaft. Where there are two pump shafts, the fan should be so arranged that it could be connected with either one of the shafts, so as to enable the pitman to attend to the pumps at one end of the shaft while the fan is drawing through the other. But, before, the pitman went into the shaft, I would connect the pump shaft with the down cast at the bottom, and partly open the connection with the fan at the top, so as to purify the air in the pump shaft.

I may say that it has been proved beyond a doubt that it is not possible to ventilate a large mine with air pipes alone, neither can an alluvial mine be properly ventilated with an air course alone, but the one is the natural correlation of the other.

I have heard it argued that an air course and upcast shaft are not effective where carbonic acid gas has to be contended with, but my reply to this is that I am not aware of a single case where the system, in all its details as I have described it, has been tried in any of the worst of our large alluvial mines. But I have known two main shafts to be connected and a very large current of air to pass from one shaft to the other without benefiting the workmen employed in the washdirt faces in the slightest degree. At this I was not surprised, as no means were adopted to divert the current of air through the different crosscuts where the gas was known to exist, the workmen and the gas being many hundreds of feet outside the current of air between the two shafts, so that it was not possible for the fresh air to dilute the gas sufficiently to be of any benefit to the workman. It may be of interest to state that I saw the effect of a current of air on carbonic acid gas while I had charge of Chalks No. 3 Consolidated at Carisbrook. We had a strong current passing from our shaft to the shaft of the Chalks Junction, and we had two parties pannelling about 300 feet outside the air course, an the air from a No. 4 Roots Blower going into these two faces; at times the gas would not allow us to get within 100 feet of the faces, while at other times a candle would burn at the mouth of the pipe, but would go out directly under the pipe, the same as if it were dipped in water. Shortly afterwards we connected a crosscut, which had been driven to divert the current of air, with the pannelling faces, and we then found that air pipes were unnecessary, neither was the gas met with at any time afterwards.

As an argument in favour of air courses (although no argument should be necessary, seeing that all the principal coal mines in the world, where all the worst gases have to be contended with, are ventilated by air courses), it may be as well for me to state that I ventilated the Prentice Freehold Mine at Rutherglen, for over two years, where we had 300 men employed, and never had an air pipe in the mine, except in the reef drive and leading washdirt drive which were ventilated by the blower. The only difference between the system adopted there and the one I have described being that we had a separate air shaft, without an exhaust fan. The fan was not required, as there was not so much gas as there is in some other districts, still we found that a short distance outside the air current, carbon dioxide was very prevalent.

In conclusion, I must say there are two essentials to the successful working of any mine, and they are good roads and good ventilation. And I maintain that if a mine will not pay to expend sufficient money to provide all the means I have stated to secure good ventilation, it will not pay under any circumstances, as it is impossible for a man to do a fair days labour where the conditions are against him, and where his health is being gradually undermined in a gaseous and vitiated atmosphere. Good air means more work, and more work means larger dividends.

[I wish I could by some means cause the words I have placed in italics to sink deep into the minds of the directors of our mining companies, as I am satisfied that many of them have little conception of the daily loss to their company in consequence of an insufficient supply of air to their miners.]

alluvial gold processing plant - gold wash plant supplier from china

alluvial gold processing plant - gold wash plant supplier from china

Hengcheng offers complete project solutions for Alluvial Gold Processing Plant. We are one of the leading project suppliers for Alluvial Gold Wash Plant Equipment and we work closely with our customers to fulfill their specific needs for customized package solution. Specialized in the fabrication of these machines for 15+ years and this enables us to be in a leading position in the field of Alluvial Gold Processing.

Alluvialis a term that refers to soil sediments and the various sand, silt, gravel, clay or other deposited matter left behind by flowing water. Alluvial gold refers to the type of gold dust found in that kind of soil. When the beds of rivers or streams are scooped and panned for gold dust, the product is referred to asalluvial gold. Best way to extract such alluvial/soil gold is using gravity separation method, which is most cost-effective choice for miners now.

At Hengcheng, we provide more than just gold washing equipment, but constantly strive to assist you in achieving overall business excellence. This is why when you partner with Hengcheng, you dont just get a diversified product offering, but form a relationship based on product refinement, a true understanding of gold process flow sheets and field service and maintenanceensuring that together we will create a solution that is suited specifically to your individual needs and that will optimize your process and lower your overall operating costs.

At Hengcheng, we provide more than just processing equipment, but constantly strive to assist you in achieving overall business excellence. This is why when you partner with Hengcheng, you dont just get a diversified product offering, but form a relationship based on product refinement.etc

18tph alluvial gold & diamond mining process in angola - jxsc machine

18tph alluvial gold & diamond mining process in angola - jxsc machine

Material: Alluvial Gold & Diamond mixture Capacity: 18TPH Country: Angola Feeding size: 0-5mm Raw mineral description: 1. Mineral type: alluvial / placer gold and diamond 2. Particle size: diamond 1-2mm; gold < 1mm 3. Contains no mud. Customers requirements: Mainly separate the tin, increase the tin concentrate grade as much as possible; Pick out magnetic minerals 1. Separate the gold and diamond 2. Increase the grade as much as possible

JXSC has been focusing on mining equipment manufacturing since 1985. Products: rock crushers, gravity separator, electrostatic separator, flotation machine, washing equipment, ore feeder, screen & sieve, etc. Application: metallurgical, mineral processing, sand making, aggregate processing, etc. Contact us for quotation

Notes: 1. Services (installation, test run, training) : the supplier can provide basic drawings and schematic drawings of equipment installation. The domestic technicians will be provided for free to guide installation and debugging, and the buyer will provide technicians with room and board. The buyer shall prepare necessary auxiliary materials for installation. 2. Quality guarantee: the equipment is guaranteed for one year. In the warranty period, due to the quality of the product manufacturing, manufacturers free warranty (except wearing parts).

9 step process for discovering, mining & refining gold

9 step process for discovering, mining & refining gold

In modern times though, mining for gold is a much more intensive, yet sophisticated process. Most surface, or alluvial gold has been found, which is why gold is mainly mined from the earth today. Its largely a matter of technology and requires much expertise and elaborate equipment.

Mining for gold today can essentially be broken down into 9 steps. Continue reading to learn more about how gold is discovered, how its brought out of the ground and how its refined to produce beautiful gold coins, bars, jewelry and other items.

The first step is discovering where gold deposits may be. Geologists use special geology maps to look for promising areas to explore further. They examine physical and chemical characteristics of surface rocks to determine if any gold is in the ground beneath.

Once some promising areas are identified through their geological characteristics, targets for drill testing are outlined using a variety of techniques, including remote sensing, geophysics and geochemistry (both air and ground based).

Next, rock samples are taken through drill testing and analyzed. Geologists and mining engineers use these samples to determine if gold actually exists, the size of the deposit and the quality of gold in the ground beneath. This information is used to determine if enough gold exists under the surface to make mining worthwhile.

If its determined the amount and quality of deposits makes mining worthwhile, engineers will next determine the type of mine thats needed, any physical obstacles and the impact the mine will have on the surrounding environment.

Before any mining can take place, infrastructure like roads and processing facilities must be constructed. Even the simplest open-pit mines can take up to a year to construct before any mining can occur. And since many potential mines are in remote areas, entire infrastructures like roads, administrative offices, equipment storage areas and even whole towns have to be built. Much of the time, it can be up to 5 years between the times discovery is made to when actual mining takes place.

Once ore is extracted, processing it into pure gold must be done. Ore is first crushed and then undergoes various processes depending on the nature of associated minerals. Processing low-grade ore is relatively simple while higher grades require more extensive processing.

Once basic processing is done, the ore is taken to a refinery where the remaining impurities are stripped out. Crude gold is melted and treated with chloride, which converts any remaining foreign metals to chloride which will then drift off the gold. The result is 99.5% pure gold, which is then cast into electrodes (known as anodes) where it is then placed into an electrolytic cell. A current is then passed through the cell, with the end product being 99.99% pure gold.

After a few years, gold reserves in the mine will be exhausted. In the old days, the mine would be boarded up and abandoned. Today though, a reclamation project is done to try and return the land to its previous natural state as much as possible anyway.

As you can see, the process of taking metal ore from the earth and converting it to gold bullion is quite extensive and requires a lot front-end investment and time. In the end though, we get these shiny coins and bars to enjoy.

Gold miners too take special care to make the impact of mining for gold as light as possible. Reclaiming land to its previous natural state is the final and perhaps most important step to ensuring the process of obtaining gold doesnt result in permanent damage to the landscape.

The post on the 9 steps of how gold is refined, has helped me to relate the process of Gods divine will has a child of God, when one is choosen by God, he or she has to go through a process in order to accomplish the will of God and also to embrace others in knowing God. I was inspired spiritually by God in researching the steps and process gold has to go through to become the finest gold.

It seems that many have thought on the gold mentioned in the Bible and having done so, think further about the processing of it spiritually in ones own life. The temple was covered in gold. We go through processes in our lives too so that God can clothe us in His righteousness not our own, and it is a costly process and time-consuming but the value of it will one day be revealed not now but when the process is completed in His time.

alluvial gold mining

alluvial gold mining

Alluvial gold is found beneath the surface at the bottom of a creak or stream. Alluvial gold mining is the process of extracting gold from these creaks, rivers and streams and is generally considered to be the most environmentally friendly method of gold mining as a result of the reduced environmental impact when compared to underground mining. Alluvial gold deposits form over time where a river runs, or has previously run through ground which is rich in gold. The erosive power of the water removes the surrounding rock due to its comparative low density while the heavier gold resists being moved. Alluvial gold usually takes the form of dust, thin flakes or nuggets. The first stage in alluvial gold mining is to take the dredged river bed material and separate the small sand faction (where the gold is found) from the larger mineral fraction. In a typical alluvial mining process physical separation methods such as screening and gravity separation are employed to separate the gold from the mineral fraction.

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the goldrush project | goldrush mining - a clean alluvial gold washing

the goldrush project | goldrush mining - a clean alluvial gold washing

From a modular point of view, the processing unit contains the following blocks: alluvial ore dredging equipment with discharge pipeline system, shaking deck, sluice boxes, screens, concentrators. The sites also contain annexed units that allow an optimal performance for the dredging & processing units: diesel generators, jet water pumps, slurry pumps, hydraulic systems, drilling equipment based on sonic technology, belt conveyors, electric control cabinets, earthmoving equipments, administrative buildings.

Our Company standards is to assure the security and surveillance of the sites and the gold route with certified security companies with high experience in the domain and with an appropriate insurance. As an improvement feature, the Company also uses helicopter transportation services, for a safe and quick transfer between the plants locations to the external destinations (final cleaning).

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