powder grinding mill grain

grinding mill at best price in india

grinding mill at best price in india

Ambattur Industrial Estate, Chennai No. 61/A30 Vanagaram Road, Athipet, Ambattur Chennai Chennai Vanagaram Road, Ambattur, Athipet, Ambattur Industrial Estate, Chennai - 600058, Dist. Chennai, Tamil Nadu

china feed pellet machine manufacturer, snack food machine, briquette processing machine supplier - zhengzhou runxiang machinery equipment co., ltd

china feed pellet machine manufacturer, snack food machine, briquette processing machine supplier - zhengzhou runxiang machinery equipment co., ltd

Feed Pellet Machine, Snack Food Machine, Grinder Crusher Machine manufacturer / supplier in China, offering Commercial Grain Spice Herb Powder Dry Grain Grinder Machine, Dates Pitting Machine Fruit Pitting Machine Date Seeds Removing Machine, Wood Tree Log Debarker Wood Bark Peeling Machine and so on.

Established in 2012, Zhengzhou Runxiang Machinery Equipment Co., Ltd(Golden Machinery Equipment Co., Limited) is one professional manufacturer integrating R&D, manufacturing and trading, we are committed to farm agriculture machine line from sheller machine, grinder machine, feed pellet machine, drying machine and packing machine for years, We have 80 staff members and 16 technicians of research team. So we have more competitive strength, advanced processing technology and scientific management. And we are ...

ultrafine powder grinding & classifying technology - expert in high-value treatment of calcium carbonate

ultrafine powder grinding & classifying technology - expert in high-value treatment of calcium carbonate

The processing of ground calcium carbonate is simply the process of using crushing and grinding equipment to process calcium carbonate minerals into various powders that can meet the requirements of industrial applications. Because different industrial applications have different requirements on the particle size, shape, whiteness and particle size distribution of ground calcium carbonate powder, the processing technology of ground calcium carbonate should also comprehensively consider the process route and equipment selection according to the product positioning. Generally speaking, the design of grinding equipment is based on different principles: impact, extrusion, friction, shear and combination of various forces, etc. Different designs will have different grinding effects and product fineness.

The common processing equipment of ground calcium carbonate produced by large-scale dry process includes Raymond mill, Vertical mill, Ring roller mill and Ball mill. Due to the different crushing principle and discharging method of the equipment, the processed powder has great differences in grain type, particle size distribution and unit energy consumption, so the positioning of the product also has obvious differences.

The ball mill can cooperate with the air classifier to form a closed-circuit circulation system, after the grading of the coarse powder can be returned to the ball mill for re-grinding, and the Raymond mill, vertical mill, vibration mill due to the capacity of the mill is very limited, return difficult, unable to form a closed-circuit circulation system, to return to the treatment of problems.

The ball mill is also a low speed operating equipment, impact and friction energy consumption to minimize. Therefore, it is not only an ideal choice for grinding high hardness, abrasive mineral raw materials, but also the most economical choice for grinding white filler minerals such as low hardness calcium carbonate.

It can be seen from the particle size distribution map that the particle size distribution of the grinding products of the ball mill is the widest. Through the air classifier, the products with different fineness requirements can be separated. At the same time, the output of the ball mill is large, with scale effect, so it has a strong market adaptability and competitiveness.

The production line adopts the international popular continuous production process: ball mill and air classifier system. The technological process mainly includes crushing (generally using two-stage crushing), grinding, classifying, packaging, magnetic separation, transportation, lifting, etc. After the ball mill can be parallel or series multiple classifier at the same time to produce more than one size of the product.

Working principle: The raw material is fed into the hollow cylinder through the hollow shaft neck for grinding. The cylinder is equipped with grinding media of various diameters (steel ball, steel bar or gravel, etc.). When the cylinder rotates around the horizontal axis at a certain speed, the medium and raw materials in the cylinder under the action of centrifugal force and friction force, as the cylinder reaches a certain height, when its own gravity is greater than the centrifugal force, it will escape from the cylinder body wall and drop or roll down, smashing the ore due to the impact force. At the same time, the sliding motion of the grinding medium also produces grinding effect on the raw material during the rotation of the mill. The ground material is discharged through a hollow journal.

Raymond mill is the earliest and most widely used grinding equipment in China, with low fineness, suitable for the production of 400 mesh of coarse ordinary powder. A small amount of 500 ~ 1250 mesh products can be obtained through secondary classification. Suitable for large scale production of coarse powder and small scale production of fine powder.

Working principle: Raymond mill rollers works under the action of centrifugal force tightly on the ring rolling, the shovel knife scooping up material to the grinding roller and grinding ring in the middle, the material under the action of ground pressure, broken into powder, and then under the action of fan blow into powder material up through analysis of machine, to fulfill the requirements of fineness of materials through the analysis of machine, cant meet the requirements of the return to continue to grinding, grinding chamber through the analysis of the material into the cyclone separation of machine to collect. Use industrial press cloth to separate the air exhaust into powder.

Vertical mill is a typical material layer extrusion crushing equipment, the most fine can reach 1250 mesh, through the second, third classification of the most fine can reach to 3000 mesh, generally suitable for mohs hardness of less than 7 materials.

Working principle: The motor through reducer driven in mill, material from the feed opening fell into a grinding disc, move to the edge of mill under the action of centrifugal force and grinding roller of roller compaction, shredded material from mill edge overflow, at the same time from the nozzle ring (ring) wind speed up stream to efficient separator, which is one with vertical mill meal after separator is returned to the mill wheel, grinding again; The fine powder is ground with the air flow and collected in the dust collecting device of the system, which is the product. Coarse granular materials not taken up by the hot gas flow and accidental entry of metal parts sink from the wind ring, after scraping out by the scraper, through the external circulation of the bucket machine feeding into the grinding again grinding.

As the roller is small and many, the fit clearance with the grinding ring is also small, the most fine grinding can be up to 2500 mesh. Low energy consumption and low fine powder content. Generally suitable for mohs hardness below 5, narrow particle size (low oil absorption value), moderate fineness of materials. But forhard materials, if they are light color (white), the degree of dialogue has a great influence.

Working principle: It adopts the principle of impact, extrusion and grinding to crush the material. There is a large active gap between the grinding ring and pin shaft installed on the grinding ring bracket. When the grinding ring bracket rotates with the spindle, the grinding ring is swung to the grinding ring by centrifugal force, and the inner wall of the grinding ring is pressed and rotates around the pin axis. When the material passes through the gap between the grinding ring and the grinding ring, it is impacted, squeezed and ground by the grinding ring. Under the action of gravity, the crushed material falls into the swing plate and is then thrown into the air flow into the grading chamber for classification. The qualified fine powder is collected through the grading wheel into the rear passage collection system, and the coarse material is thrown into the shunt ring for internal avoidance, and then falls back into the crushing chamber for crushing. The grinding ring is single layer or upper and lower double layer distribution. When the double-layer grinding ring crusher works, the material is crushed again when passing through the gap between the second grinding ring and the grinding ring.

zps: efficient and flexible fine grinding of grain extrudates | hosokawa alpine

zps: efficient and flexible fine grinding of grain extrudates | hosokawa alpine

Since May 2019 Swissmill, the largest grain miller in Switzerland, is grinding extrudates of oatmeal or wheat bran with a Hosokawa Alpine Zirkoplex classifier mill in an energy-efficient, resource-saving and very flexible way. Especially with abrasive products the Zirkoplex classifier mill - a combination of a Turboplex classifier with a fine impact mill - guarantees customized fineness values and a high throughput.

On the one hand we wanted to achieve a significantly higher throughput and thus generate more capacities. And on the other hand, we wanted to manufacture products with customized fineness values to match customer requirements.

Whether crusty bread, muesli flakes or biscuits, Swissmill ensures that many people can enjoy high-grade cereal products every day. The company, rich in tradition, with headquarters in Zurich has been in business since 1843. With over 200,000 tonnes of ground grain per year, Swissmill counts today as the biggest grain miller in Switzerland. They are well known for their high standards of quality, taste, technology and innovation.

To remain on this level, the company modernised its production and integrated a new extruder line and a new grinding system. "On the one hand we wanted to achieve a significantly higher throughput and thus generate more capacities. And on the other hand, we wanted to manufacture products with customized fineness values to match customer requirements", says Roland Eggli, Extrusion Manager at Swissmill. In pursuit of a solution, the Hosokawa Alpine 400 ZPS Zirkoplex classifier mill in pressure-compensated design was chosen.

Previously different fractions had been produced via a screening machine after a beater mill. "The screens clogged up in a relatively short period of time, meaning that significantly lower quantities of the desired product were generated", explains Roland Eggli.

The main challenges: the system has to be able to grind abrasive products and has to fit furthermore into the limited space available. Due to its large grinding chamber, the Hosokawa Alpine Zirkoplex classifier mill ZPS is suitable for abrasive products and is well known for its flexibility in the product fineness. The classifier mill enables the production of powders with a precise top cut and steep particle size distribution. Therefore, Swissmill decided to extend the process with a classifier mill. "What convinced us, was ultimately the competent consulting provided by the sales and technology departments and the entirely positive grinding tests in Hosokawa Alpine's application testing centre," says Roland Eggli.

Hosokawa Alpine has its own application testing centre in Augsburg equipped with over 60 machines, which provides the customers with the possibility of having trials carried out, whose aim is to find the right system configuration and determining the process-technological warranty parameters.

In a first step, the feed material is charged pneumatically to the supply bin of the grinding system. The feed material is then transferred using an inclined screw conveyor and dosed to a rotary valve. The rotary valve upstream of the mill fulfills a barrier function.

This results in an explosion decoupling effect before the feed material is charged to the ZPS. Air is supplied to the classifier mill via a side socket underneath the grinding track. This ensures that the product is transported from the grinding track to the classifier and simultaneously has a cooling effect on the processed material.

The integrated classifier produces a product with a precise top cut and a steep particle size distribution without spatter grain. Particles of the desired final size are discharged immediately without putting an unnecessary strain on the grinding unit.

Particles that are too coarse are rejected by the classifying wheel and returned to the grinding elements in the lower part of the mill housing for final comminution. The particles are comminuted until they reach the specified fineness. Only then can they pass through the classifying wheel for collection in the automatic bag filter and being discharged via the rotary valve.

The important thing is that in terms of dust explosion risks, the fine end product is considered an ST1 product. The grinding system is therefore in pressure-relieved design. To this end, a flameless explosion-venting valve was installed. In the event of an explosion, the integrated rupture disc bursts as the result of the pressure increase and the pressure is vented without flames to the outside.

The project planning, automation and commissioning of the 400 ZPS were carried out by a team of process-technology and electro-engineering experts. Meanwhile the system has been installed at the historical site in Sihlquai, Zurich in spite of a very limited space. As well the existing extruder line has to be integrated into the feed system.

Put into figures: since commissioning in May 2019, Swissmill has profited from higher throughputs and saving operating hours and thus considerable personnel resources. "The entire project handling was characterised by an extremely pleasant and solution-oriented atmosphere", says Jrg Krahnen, Operations Director Food Division at Hosokawa Alpine.

Related Equipments