Preparation system for producing building material products by gradient utilization of pyrolytic steel slag

Abstract

The invention belongs to the technical field of building material metallurgy, and particularly relates to a preparation system for producing building material products through gradient utilization of pyrolytic steel slag. The preparation system for producing building material products through gradient utilization of pyrolytic steel slag comprises a raw material bin, a suspension type iron remover A, a conveying reamer, a steel slag vertical mill, a suspension type iron remover B, a built-in conveying reamer, an elevator A, a magnetic separator, a vibrating screen, a hot blast stove, a cyclone cylinder, a ball mill, a conveying chute, an elevator B, a micro powder bin, a circulating fan, a dust collector A, a dust collecting fan A, a chimney, a dust collector B and a dust collection fan B. According to raw material characteristics of the pyrolytic steel slag, the pyrolytic steel slag is subjected to graded utilization, easily-ground components are prepared into micro powder, difficultly ground components are prepared into coarse aggregate and fine aggregate, so that the production energy consumption is saved, the production cost is reduced, and the product types are diversified. The preparation system for producing the building material products by gradient utilization of the pyrolytic steel slag can meet the requirements of different customers.

Description

technical field [0001] The invention belongs to the technical field of building material metallurgy, and in particular relates to a preparation system for producing building material products by gradient utilization of hot stuffy steel slag. Background technique [0002] Existing techniques and drawbacks: [0003] Steel slag is a by-product of the steelmaking process, accounting for 10% to 15% of crude steel output. The composition of steel slag is complex and changeable, the main reason is that the furnace type of steelmaking furnace is different and the steelmaking process is different, even the chemical composition of steel slag from different furnaces in the same steelmaking plant is also very different. The main treatment processes for steel slag are: hot stuffing method, hot splashing method, plate splashing method, water quenching method, wind quenching method, drum method, granulation wheel method, etc. [0004] The main chemical components of steel slag are CaO, S...

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Problems solved by technology

[0012]The main defect of this technology is: 1. During the pretreatment process of steel slag grinding, an activated modifier is added, and the modifier is attached to the surface of the large particles, and the loss rate is very high. The effective effect is weak, and the usability in actual production is poor; the second is to dissociate and grind the fine particles to 1-2000 μm. The steel slag particles may contain dead-burned CaO and MgO, and there is a risk of poor stability in the subsequent application process; the RO phase extraction is only to screen and purify the materials deposited by the grinding equipment, and a large number of RO-rich phase particles are decomposed. Grinding during the separation process requires a large amount of energy consumption

[0017] Therefore, based on the problems of poor grindability, low activity, high production cost and resource utilization degree of the existing steel slag, a raw material characteristic based on hot stuffy steel slag is provided , the hot stuffy steel slag is classified and utilized, the easy-to-grind components are prepared into fine powder, and the difficult-to-grind components are prepared into coarse aggregate and fine aggregate, which saves production energy consumption and reduces production costs. The product types are diversified to meet different customers. The demand for hot stuffy steel slag gradient utilization for the production of building material products has important practical significance

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