An intelligent disposal system for iron-containing solid waste and its control method

Abstract

The invention belongs to the field of metallurgy, and relates to an iron-contained solid waste intelligent treatment system and a control method thereof. A flexible dosing process, a homogenizing process, a cold briquetting process, a rotary hearth furnace process and a time dividing output process are included; intelligent matching is carried out according to the iron, zinc and sulphur content conditions of iron-contained solid waste and states of all processes, the flexible dosing process is responsible for dosing, the homogenizing process, the cold briquetting process and the rotary hearth furnace process are responsible for treatment, and the time dividing output process is responsible for conveying materials to sintering, blast furnace and converter zones; and according to crude fuel information, solid waste generation information, solid waste product need information originally utilized by an iron and steel plant, the zinc load of the iron and steel plant is comprehensively forecasted, the supplying amount of high zinc-contained ore and high zinc-contained waste steel of the iron and steel plant is directed, the using amount of low-price high zinc-contained materials is increased, the sulphur content of solid waste product used by a converter is reduced, the converter desulfuration load is reduced, the using depth of iron-contained solid waste resources of the iron and steel plant is improved, the green production of the iron and steel industry is effectively pushed, and efficient and recycling circulated utilization of a iron-contained solid waste plant is achieved.

Description

technical field [0001] The invention belongs to the field of metallurgy, and relates to an intelligent disposal system for iron-containing solid waste and a control method thereof. Background technique [0002] my country's iron and steel enterprises produce a large amount of dust and sludge every year, and the total amount accounts for about 10% of crude steel output. In 2016, the output of crude steel was 800 million tons, and the dust and sludge content was about 80 million tons, of which about 30 million tons belonged to zinc dust. Mud, such as blast furnace gas ash / mud, electric furnace dust, converter dust sludge, etc., contains zinc, lead, sulfur and other impurities. The recycling of crude steel will form on the upper part of the blast furnace due to the volatilization and enrichment of zinc and lead in the blast furnace. Nodules affect the normal operation of the blast furnace and shorten the life of the lining. Excessive sulfur content entering the converter will in...

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Problems solved by technology

[0003] In view of this, the present invention provides an intelligent disposal system for iron-containing solid waste and its control system in order to solve the problems that the excessive zinc load of the iron and steel plant affects the normal operation of the blast furnace and the dust sludge generated by iron and steel smelting contains a large amount of unused iron and carbon resources. method

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