Ultrafine fly ash production technology

Abstract

The invention relates to an ultrafine fly ash production technology, which comprises the following steps of: (1) placing a raw material fly ash from a raw material warehouse into an air skewed slot of a grinding head; (2) conveying the raw material by the air skewed slot of the grinding head into a grinding head elevator, and lifting by the grinding head elevator into a bowl mill; (3) grinding the material into a semi-finished product in the bowl mill, and sending the semi-finished product into a grinding tail elevator through an air skewed slot of a grinding tail; (4) entering into a powder choosing machine through the grinding tail elevator, screening, absorbing an iron powder from the raw material by a magnetic separator, conveying a finished product, which accords with the standard and is the finished product with R32 sieve residue being less than 8% and the specific surface area being greater than 700m<2> / kg, into a finished product warehouse, and allowing a substandard semi-finished product to return to the grinding head elevator and enter into the bowl mill so as to repeat the grinding process and repeat the step (3) and the step (4). By the adoption of the ultrafine fly ash production technology, the production efficiency is high, and the finished product satisfies the ultrafine requirements that the R32 sieve residue is less than 8% and the specific surface area is greater than 700m<2> / kg.

Description

technical field [0001] The invention relates to a production process of fine powder, in particular to a production process of superfine fly ash. Background technique [0002] There is a big difference between the refined solid and the massive solid. The smaller the particle, the greater the solubility, the lower the melting point, the higher the chemical potential, the faster the reaction, and the lower the ignition point of the combustible. Optics, electronics, magnetism, thermodynamics and chemical activity can all undergo strange changes and produce extraordinary effects; due to the development of modern engineering technology, solid substances in powder state are required to have extremely fine particle size, strict particle size distribution, the proportion of coarse particles is extremely low, or even completely absent, and the existing fine powder production process cannot meet the above requirements; a large amount of fly ash is produced during the operation of the p...

AI Technical Summary

Problems solved by technology

[0002] There is a big difference between the refined solid and the massive solid. The smaller the particle, the greater the solubility, the lower the melting point, the higher the chemical potential, the faster the reaction, and the lower the ignition point of the combustible. Optics, electronics, magnetism, thermodynamics and chemical activity can all undergo strange changes and produce extraordinary effects; due to the development of modern engineering technology, solid substances in powder state are required to have extremely fine particle size, strict particle size distribution, the proportion of coarse particles is extremely low, or even completely absent, and the existing fine powder production process cannot meet the above requirements; a large amount of fly ash is produced during the operation of the power plant. The reuse of fly ash is directly used without refinement, which seriously affects the performance and economic value of products produced using fly ash

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