Production line for preparing concrete blocks

Abstract

The invention relates to the technical field of solid waste comprehensive utilization, in particular to a production line for preparing concrete blocks. The production line comprises a feeding box, ascreening box, a crushing and magnetic separation device, a dehydration instrument, a first stirring box, a second stirring box, an injection molding device and a heat preservation chamber; a top plate is mounted at the top end of the screening box; a screening device is arranged in the screening box; the bottom end of the crushing and magnetic separation device is fixedly connected with the top end of the top plate; the bottom end of the crushing and magnetic separation device communicates with the interior of the screening box through a feeding pipe; a first electromagnetic valve is mountedon the feeding pipe; and the feeding box is located on the left side of the screening box. On the premise that the performance of the aerated concrete blocks is guaranteed, the problem of accumulationof waste residues of enterprises is solved, meanwhile, the production cost of the aerated concrete blocks is greatly reduced, the compressive and flexural strength of the concrete blocks is improved,the aerated concrete is prepared from steel slag tail mud, steel slag fine sand, composite foaming agents and alkali excitants without autoclaving, and the relatively-high strength can be developed in a room-temperature environment.

Description

technical field [0001] The invention relates to the technical field of solid waste comprehensive utilization, in particular to a production line for preparing concrete blocks. Background technique [0002] Aerated concrete blocks are a new type of green and environmentally friendly building materials. Steel slag, as the metallurgical waste of steel factories, is piled up in large quantities in factories, which cannot be used and occupies space. Comprehensive use of industrial steel slag, control of environmental pollution, saving cultivated land, has good social and economic benefits. Become the driving force for the development of circular economy and sustainable development. [0003] Patent 201710371072.0 discloses a method for preparing aerated concrete blocks from steel slag magnetic separation tailings, which specifically relates to the technical field of steel slag recycling. The method is characterized in that: using tailings, cement, sand, lime, gypsum, aluminum po...

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Problems solved by technology

[0006] The above patents process steel slag through crushing and wet ball milling processes, magnetically select recyclable iron minerals, and process the sieve residue and steel slag slurry into steel slag fine sand and steel slag tailings, which are used as raw materials for preparing aerated concrete. The resource utilization rate of steel slag is relatively low, and there are relatively many secondary wastes, which reduce its practicality. The performance of the aerated concrete at the center of the pile in the autoclave is often reduced due to insufficient autoclave, resulting in waste of materials

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