A kind of blast furnace slag powder processing technology

Abstract

The invention discloses a processing technology of blast furnace slag powder, which comprises the following steps: Step 1, preliminary screening; Step 2, preliminary drying; Step 3, crushing; Step 4, grinding; Step 5, secondary screening; Step 6, Secondary drying; step 7, bagging and packaging; in the above step 1, the workers shovel out the slag in the blast furnace, and vibrate the slag through the mining vibrating screen to make the unburned ore in the slag or The slag with larger particles is filtered and left above the sieve plate to achieve filtration and screening; in the above step 2, the slag in step 1 is put into the slag dryer; the slag powder processing technology crushes the slag before crushing The slag is preliminarily screened to recycle the unburned ore in the slag, and the drying treatment is carried out twice in the early stage and the later stage of the process, which avoids the phenomenon of slag powder resurfacing before production and bagging, and ensures the slag powder. Finished product quality.

Description

technical field [0001] The invention relates to the technical field of slag powder processing technology, in particular to a blast furnace slag powder processing technology. Background technique [0002] Slag powder is the abbreviation of granulated blast furnace slag powder, which is a high-quality concrete admixture. Powder is industrial solid waste discharged from coal-fired pulverized boilers in thermal power plants. It is mainly vitreous and has pozzolanic properties. It is one of the main raw materials for cement production, concrete preparation and wall material production. The existing blast furnace slag powder processing The process is relatively uniform. In the process, the slag is not pre-screened before the slag is crushed, and the unburned ore in the slag is not recycled. The process is only dried once, and the phenomenon of moisture regain is easy to occur in the later stage of production. It affects the processing of the slag powder in the later stage. The st...

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Problems solved by technology

[0002] Slag powder is the abbreviation of granulated blast furnace slag powder. It is a high-quality concrete admixture. It is made of granulated blast furnace slag that meets the standards, dried and ground, to a powder with a considerable fineness and a considerable activity index; slag Slag powder is industrial solid waste discharged from coal-fired boilers in thermal power plants. It is mainly glassy and has pozzolanic properties. It is one of the main raw materials for cement production, concrete preparation and wall material production; the existing blast furnace slag powder processing The process is relatively uniform. In the process, the slag is not pre-screened before the slag is crushed, and the unburned ore in the slag is not recycled. Only one drying treatment is carried out in the process, and the phenomenon of resurgence is prone to occur in the later stage of production. Affects the processing of slag powder in the later stage. The structure of the grinder used in the traditional processing technology is relatively simple, which cannot guarantee the particle size of the slag powder in the later stage, and cannot be used for cyclic grinding, which affects the finished product effect of the slag powder in the later stage.

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