Method for recycling organic silicon slurry

Abstract

The invention discloses a method for recycling organic silicon slurry, and belongs to the technical field of environment protection. The method comprises the following steps: (1) adding a low-boiling-point substance in organic silicon residue slurry for hydrating, and then carrying out solid-liquid separation to obtain supernate and precipitate; (2) performing alcoholysis on the supernate with ethanol, and performing alkaline hydrolysis on the precipitate with an alkaline liquor; (3) completely introducing final products obtained in alcoholysis and alkaline hydrolysis, washing with a potassium chloride solution to obtain diluent and dried residues; (4) mixing the dried residues and cement with sands, mixing with the diluent, and adding water to prepare cement mortar for construction; and (5) mixing the diluent with an organic solvent, adding fatty acid to react, adding water into the reacting product to prepare a construction material water-proofing agent. The method for recycling organic silicon slurry is simple and feasible, the hydrolyzed and dried residues are used for preparing cement mortar, and the diluent can be used for preparing the construction material water-proofing agent, so that waste recycling can be realized, environmental pollution can be reduced, and the requirement for sustained development strategy can be met.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, in particular to a method for recycling organic silicon slag. Background technique [0002] In recent years, with the development of the economy, the acceleration of the industrialization process and the improvement of the level of urbanization, human beings are facing increasing environmental pressure. Waste has always plagued the living environment of residents and disrupted the ecological balance. [0003] Among them, organosilicon slag is a kind of waste with serious pollution. It is a waste slag generated during the synthesis of organosilicon monomer, which accounts for about 3% of the monomer. With the rapid expansion of organosilicon monomer production , accompanied by a large amount of organic silicon waste slurry, its main composition is silicon powder (particle size 2 ~ 150um) brought out by more high boiling matter and a small amount of fluidized bed, copper powder an...

AI Technical Summary

Problems solved by technology

[0004] With the rapid development of the organosilicon industry, the output of organosilane chlorosilane monomers is also increasing. Organosilicon high boilers are one of the by-products of the production of organosilyl chlorosilane monomers. There are two main sources: one is through refining Distillation of organosilane chlorosilane monomer, this type of high boiling matter accounts for about 5% of chlorosilane monomer, it is easier to carry out industrial development and utilization; the other is derived from organosilicon slurry, this type of high boiling matter accounts for about 5% of monomer About 3% to 5% of the production capacity, the composition is complex, and contains a large amount of solid particles such as silicon and copper, which is easy to react with moisture in the air to form corrosive hydrogen chloride gas, which cannot be treated by simple methods