Production line and technology for preparing aluminophosphate cementing material from white clay

Abstract

The invention provides a production line and a technology for preparing an aluminophosphate cementing material from white clay. White clay residues / carbide slag, ground phosphorite, aluminum materialsand crystal nuclein are conveyed to a stirrer by a dosing machine and an electronic belt scale for uniform mixing and stirring; a mixture is conveyed to a rotary kiln and calcined for 20-40 min untilthe temperature of the mixture reaches 900-1100 DEG C; after calcination, the mixture is cooled to 300-400 DEG C by a cooler; after cooling, the mixture is subjected to powder grinding by a first ball mill, and the special aluminophosphate cementing material is prepared. According to the production line and the technology, the white clay can be eliminated, and beautiful natural ecological human settlements in the local area are powerfully protected; recycling of renewable resources is accelerated, waste is changed into wealth, harmful substances are changed into beneficial substances, pollution is treated, environment is improved, the occupied land resources are released, besides, the graceful environment can be created for people, and the ecological environment with harmony and unification between man and nature is promoted.

Description

technical field [0001] The invention relates to the field of waste recycling, in particular to a production line and a process for preparing aluminophosphate gelling materials from white mud. Background technique [0002] There are two sources of white mud. One is that during the production of soda ash, a large amount of waste liquid will be produced in the process of making alkali with ammonia-soda method. The alkali residue produced after the waste liquid is filtered is commonly known as white mud. Another kind of black liquor produced in the papermaking and pulping production process is treated by alkali recovery technology, and lime is added to the green liquor for causticization reaction to obtain white sediment, which is white mud. The reaction of papermaking lime mud is as follows: [0003] Na 2 CO 3 + CaO+ H 2 O = 2NaOH + CaCO 3 ↓ [0004] Its main chemical components are: [0005] project CaO MgO Fe 2 o 3 Al 2 o 3 SiO 2 ...

AI Technical Summary

Problems solved by technology

[0010] The present invention provides a production line and process for preparing aluminophosphate cementitious materials by using white mud, the main purpose of which is to overcome the defect that the prior art cannot use white mud to produce special aluminophosphate cementitious materials

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