machinery equipment to manufacturing white powder cement

white cement manufacturing process: 6 steps | white cement plant

white cement manufacturing process: 6 steps | white cement plant

In the cement manufacturing process, in order to avoid the mixing of colored impurities, calcination of white cement plant mostly use natural gas or heavy oil as fuel. Reduction slag, gypsum and white granulated slag produced by electric steelmaking can also be used to produce white cement without clinker.

Strength: strength is another typical standard, there some factors to affect the cement strength, such as constituent minerals of clinker, sintering degree, crystalline state, cement fineness, admixture activity, cement particle gradation, etc.

The white cement manufacturing process is similar to the Portland cement manufacturing process, so we introduce the factors that affect cement quality. Just like general cement manufacturing plant, the white cement manufacturing process can be generally divided into six steps:

In the white cement manufacturing process, the kiln firing system is the key to the entire cement production line, which affects the product quality and energy consumption of the entire white cement plant. Therefore, it is important to rationally design the kiln firing system. AGICO CEMENT introduces the design of the rotary kiln firing system on the white cement plant.

Because a small amount of fluorite is added as a mineralizer in the white cement raw material to reduce the firing temperature. Fluctuation or improper control of the blending amount in the cement production can cause the liquid phase to appear in advance in the preheater at all levels of the kiln, especially in the high temperature section and the decomposition furnace, which will cause the material to stick. It is especially serious in the place where a little cold wind leaks in and may occur at any time. This is also a feature that must be paid attention to in white cement manufacturing process.

Therefore, in the design of the preheater at each level (fifth stage) of the kiln tail, more attention must be paid to solving the problems of sealing the kiln end preheater system and preventing the accumulation of materials. The solutions are as follows: all the flanged parts of the preheater air pipe flanges are welded to completely prevent air leakage in this part; All levels of unloading air-locking flap valves are made of high-quality heat-resistant steel to reduce the deformation of the valve body at high temperatures to ensure the effect of air-locking; the connection between the cyclone inlet and the air duct at all levels eliminates horizontal or circular air ducts completely, the air pipe is connected with a large inclination angle (with a horizontal angle of 55 ) to avoid the accumulation of material at this part as much as possible.

The volume should meet the average residence time of the gas in the furnace is equal or more than 5.5s, because the clinker from the kiln is cooled by the water spray, which will cause the temperature of the tertiary air decrease, resulting in a corresponding increase in the fuel combustion time. It is important to ensure that the material entering the kiln has a high carbonate decomposition rate, and reduce the calcination pressure in the cement kiln.

The clinker adopts a combination of water spray quenching and grate cooler. The principle is to promote the reduction of ferric iron in the clinker to divalent iron to increase the whiteness of the clinker.

In actual cement production, the consumption of the water spray is determined by the specific whiteness and intensity control requirements that can meet the quality of the clinker. The design should ensure reasonable configuration and automatic control and operation. This kind of bleaching method can produce all high-quality white cement with a Heinz whiteness of 90 or more and a P W42.5 or more.

Due to spray bleaching, the temperature of the tertiary air will be reduced, in order to compensate and reduce its adverse effects as much as possible. It is necessary to add a layer of 40mm-60mm calcium silicate board in the lining of the tertiary air duct to enhance its thermal insulation effect.

Through the above reasonable design, it is beneficial to reduce the energy consumption on the production line, ensure the production quality of white cement, and produce cement clinker with higher whiteness and strength. AGICO CEMENT has rich experience in cement production line design and supplying cement equipment.

White Portland cement is main kind of white cement. low content of ferric oxide and other non-ferrous metal oxide of limestone, clay, silica are used as the main raw material, after high temperature calcination, quenched into cement clinker, adding suitable amount of gypsum (can also add a small amount of white limestone instead of part of the clinker) into cement grinding mill equipped with stone or wear-resistant metal plate and grinding medium.

Uses: white Portland cement is similar to ordinary Portland cement in physical properties, mainly used as decorative materials for buildings, but also for sculpture crafts. The use of white cement also includes putty powder, coating, caulking agent, binder, waterproof coating, terrazzo, artificial stone, floor tile, permeable brick, washing stone, sculpture, wear-resistant floor, color cement and so on

new and used concrete production equipment

new and used concrete production equipment

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We work with thousands of companies throughout all 50 states as well as internationally to broker deals on used concrete equipment. We have one of the largest selections of used equipment you will find online. Even with the huge selection already on our website sometimes there is equipment you want, that we don't currently have listed. Please let us know what you are looking for and we will help you find the equipment you need.

machinery solutions for leading manufacturers | stiles machinery

machinery solutions for leading manufacturers | stiles machinery

World-class machinery, backed by the nation's largest team of service and support specialists, an extensive inventory of ready-to-ship parts, and the industry's only nationally accredited workforce training program. Stiles is your solution for any challenge, and your partner in every success.

Stiles Building Automation team is committed to supporting the offsite manufacturing industry through providing industry leading equipment and the most experienced sales, service and technical support.

plants and equipment for processing milk powders gea

plants and equipment for processing milk powders gea

Dairy-based milk powders offer shelf-stable, nutritious options that can be used as an alternative to fresh milk, as a healthy, instant drink, or as ingredients in a wide range of recipes. Consumers expect highly soluble, consistent products that taste great and dissolve quickly. Manufactures expect reliable, hygienic equipment and plants that process high quality milk powders with exactly the right chemical composition and physical characteristics.

Dairy-based milk powders offer shelf-stable, nutritious options that can be used as an alternative to fresh milk, as a healthy, instant drink, or as ingredients in a wide range of recipes. Consumers expect highly soluble, consistent products that taste great and dissolve quickly. Manufactures expect reliable, hygienic equipment and plants that process high quality milk powders with exactly the right chemical composition and physical characteristics.

Manufacturing milk powder products involves a major investment in equipment, ingredients, and resources. GEA offers intelligent, robust components, equipment and end-to-end solutions that help to keep your processes profitable and competitive. Milk powder plants from GEA are in operation at dairy companies all over the world. We understand your need to stay flexible, meet customer demand, and innovate to deliver new, market-winning milk powders. GEA will work with you to tailor the optimum solutions for your products, capacity and throughput.

Microbiological safety must be ensured at every stage of the milk powder process. Our portfolio of separators and ceramic microfiltration systems physically remove heat-resistant bacteria and spores from milk and whey, with minimal impact on taste, nutritional content, or other final product properties.

GEA technologies are designed to carry out safe, hygienic processing, every batch. All of our equipment is manufactured to meet the most stringent requirements for hygiene, and to make cleaning fast and effective. Many of our technologies can be configured with automated clean-in-place (CIP) systems that carry out thorough cleaning, with less use of water and chemicals. Less down time for cleaning means more time in production.

Evaporation is a key process in milk powder manufacture that removes the majority of excess water from the liquid mix prior to spray drying. We have developed a portfolio of efficient and versatile mechanical vapor recompression (MVR) and thermal vapor recompression (TVR) falling film evaporators for this process. Robust direct and indirect heating technologies reduce energy consumption, and are gentle on the product to avoid denaturing milk proteins and other nutritional components.

Where possible our systems can be configured to recycle excess heat and water for reuse elsewhere in the process. Highly efficient CIP cycles reduce stoppage time to ease bottlenecks, while fast evaporator start-up and shut-down means there are fewer delays, so your key equipment isnt kept idle.

Physical properties of the final milk powder product are defined at the spray drying stage. This critical process impacts on particle size and agglomeration, powder density, solubility and stability. We have developed spray drying systems that are designed to produce consistent, precisely defined powders, every batch. Many of our milk powder customers rely on GEA spray drying equipment, including our MSD chamber, DDD air disperser, and VIBRO-FLUIDIZER external fluid bed.

Talk to our experts about how we can configure the ideal spray drying solution for your process. We have worked with the industry to develop auxiliary systems that add even more value to your process. The optional SANICIP bag filter technology can help to minimize product loss by recovering powder fines from the cyclones and returning them to the drying chamber. Our DRYCONTROL technology precisely controls residual moisture in the final powder, and the ground-breaking POWDEREYE instrument measures powder moisture, detects scorched particles, and can measure bulk density as well as tapped density. The smart POWDEREYE technology automatically alerts the operator if process parameters are heading out of specification, so that they can be fine-tuned, and costly out-of-specification production avoided. And to minimize stoppage time between batches we can configure spray drying systems with dual feed lines, so you can continue to operate when one feed system is being cleaned.

Hygienic, safe, and precise technologies are a must for all stages of powder handling. GEA technologies minimize the risk of contamination, so your environment remains safe. Our highly configurable solutions automate the handling and conveying of powders received in the majority of packaging formats, including 25kg bags, flexible intermediate bulk containers (FIBC) and rigid IBCs. We offer safe, hygienic powder handling and filling systems that feature accurate weight control as standard to reduce product loss. User-friendly, easy to clean and maintain, our systems dont affect powder structure or stability. Dense phase vacuum conveying reduces dust generation during powder transfer to storage units or to mixing and blending plants. A dust-free environment means reduced cleaning and maintenance of the plant.

GEA solutions span the complete process, so you dont have to deal with upstream and downstream bottlenecks. Automated pre-gassing, gas flushing and post-gassing solutions can be configured for different bag types, whatever your throughput and capacity. We also offer semi- and fully automatic powder packing systems for most bulk packaging formats. With all filling systems, we can also offer integrated solutions for modifiedatmosphere packing (M.A.P.).

Multiple stages in milk powder processing depend on precise temperature control of heating and refrigeration. Our refrigeration systems are used by the dairy industry worldwide to maintain milk powder ingredients and products under optimum conditions. GEA systems are designed with a focus on energy saving. Our heat pump technology upcycles waste heat and reduces water consumption, which reduces energy use and operating cost.

GEA doesnt just supply equipment and process solutions. Our dedicated project management teams oversee each project, from concept and planning through to final commissioning and handover of your completed plant. We understand that the smallest details can make a big difference, so we leave nothing to chance, and work to make sure that every deliverable is achieved on time and on budget. Our customers can concentrate on their commercial and business objectives without having to worry about unforeseen costs or delays.

GEA is one of the worlds largest systems suppliers for the food, beverage and pharmaceutical sectors. The international industrial technology group specializes in machinery and plants as well as advanced process technology, components and comprehensive services. With more than 18,000 employees, the group generated revenue of more than EUR 4.6 billion in fiscal year 2020. A major focus is on continuously enhancing the sustainability and efficiency of customers production processes. GEA plants, processes and components help achieve significant reductions in carbon emissions, plastic use and food waste in production worldwide. In this way, GEA makes a decisive contribution toward a sustainable future, fully in line with its corporate philosophy of engineering for a better world.

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