Industrial waste residue grinding system

Abstract

The invention belongs to the technical field of industrial waste residue grinding, and particularly discloses an industrial waste residue grinding system which can utilize a roller press, a V-shaped powder concentrator, a dynamic powder concentrator, a roller press inlet bucket elevator, a roller press outlet elevator, a humidifying stirrer, a system dust collector, a system fan and the like to form a roller press final grinding system. The roller press final grinding system can be used for producing micro powder such as slag and steel slag, can be connected with a ball mill, a dust collector, a centrifugal fan and an air conveying chute C in series to form a ball milling system in series, can be used for producing ultrafine powder with higher specific surface area, can be flexibly switched according to different product requirements, meets the requirement of high specific surface area, and is low in unit power consumption.

Description

technical field [0001] The invention belongs to the technical field of industrial waste residue grinding, and specifically discloses an industrial waste residue grinding system. Background technique [0002] At present, domestic slag, steel slag, nickel slag, silicon-manganese slag and other waste slag have not been effectively utilized for a long time, and long-term storage will not only cause additional burden on production enterprises, but also have a great impact on the ecological environment. If the slag, steel slag, Nickel slag, silicon manganese slag and other waste residues are ground to 400m 2 When it is above / kg, or even higher, the latent hydraulic properties in the waste residue are stimulated, and these waste residue micropowders can be used as cement admixtures. [0003] The simple ball milling system is the traditional grinding system for slag. The slag is generally dried first. The investment of the dryer is large, and intermediate storage is required. The ...

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Problems solved by technology

[0002] At present, domestic slag, steel slag, nickel slag, silicon-manganese slag and other waste slags have not been effectively utilized for a long time, and long-term stockpiling will not only cause additional burdens on production enterprises, but also have a great impact on the ecological environment. If slag, steel slag, Nickel slag, silicomanganese slag and other waste slag are ground to 400m 2 / kg, or even higher, the latent hydraulicity in the waste slag is stimulated, and these waste slag fine powders can be used as cement admixtures

[0003] The simple ball milling system is the traditional grinding system of slag. Generally, slag needs to be dried first. The investment in the dryer is large, and intermediate storage is required. The process is complicated. The unit power consumption is generally 70~75kwh / t. The specific surface area of ​​slag powder Very unstable, difficult to reach 400m 2 / kg, it is basically no longer used due to high energy consumption

[0004] The slag grinding process of the vertical mill system is simple, and the entire process of drying, grinding, and powder selection is completed in the vertical mill, and the specific surface area can reach 450m 2 / kg, the unit power consumption is generally 40~45kwh / t, based on the above characteristics, the vertical mill grinding slag system has developed rapidly in recent years, but steel slag and nickel slag are more difficult to grind than slag, and the iron content is more important Large, the grinding rollers and grinding discs of the vertical mill wear a lot, and the increasing steel slag and nickel slag cannot be handled well

[0005] The specific surface area of ​​the final grinding system of the roller press can be stabilized at 450m 2 / kg or more, the unit power consumption is 35~40kwh / t, but it cannot be completed when faced with a higher specific surface area requirement

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