Processing technology of blast furnace slag powder

Abstract

The invention discloses a processing technology of blast furnace slag powder. The processing technology comprises the following steps of firstly, preliminary screening, secondly, preliminary drying, thirdly, crushing, fourthly, grinding, fifthly, secondary screening, sixthly, secondary drying and seventhly, bagging packaging. In the above first step, a worker shovels out ore slag in a blast furnace, the ore slag is subjected to vibration screening through a mining vibration screen, non-burnt-up ore or large-particle ore slag in the ore slag is filtered to be left above a screen plate, and filtering screening is achieved. In the above second step, the ore slag in the first step is put into an ore slag dryer. By means of the processing technology of the ore slag powder, the ore slag is preliminarily screened before being crushed, non-burnt-up ore existing in the ore slag is recycled, two times of drying treatment are carried out in the early stage and the later stage of the technology, the phenomenon of moisture regain is avoided before production bagging of the ore slag powder, and the finished product quality of the ore slag powder is guaranteed.

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. 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 carrie...

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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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