Method for separating and treating granite saw powder and usage thereof

Abstract

The invention relates to a method for separating and treating granite saw powder and the usage thereof, mainly aiming at solving the problems that the granite saw powder is large in occupied land area and pollutes the environment. The method comprises the steps of: firstly, diluting the granite saw powder into slurry with concentration being 20% by water, sieving the slurry by 40 meshes, enabling the sieved slurry to enter a slurry storage tank, then sending the slurry into a high gradient magnetic separator by a pump for magnetic separation, separating the metal-containing powder out from the granite saw powder to remain the metal-free powder, carrying out precipitation and dehydration, drying the product by a drum drier to obtain white powdered substance with the water content less than or equal to 15%, wherein the white powdered substance can be used as ceramic raw material. The method has the advantages that the problems of environmental pollution and land occupation can be solved, the resource is fully utilized, and the waste is changed to be valuable.

Description

Technical field: [0001] The invention relates to a method for separating and treating waste granite saw powder and its application. Background technique: [0002] With the rapid development of social economy, the construction industry is advancing by leaps and bounds, the production of granite stones came into being, and the industry expanded rapidly. In many granite stone production areas, the granite sawdust is piled up in the open air, covering a large area, blowing up with the wind, and polluting the environment; If the particles are too fine, it is not easy to precipitate in water, forming muddy water and polluting water sources. At present, landfill is mostly used, but landfill still occupies land, and the cost is high, and it is also a waste of resources. In addition, granite saw powder contains about 95% non-metallic minerals such as silicon, potassium feldspar, albite, alumina, etc. It is a good raw material for the production of ceramics, but because granite saw p...

AI Technical Summary

Problems solved by technology

[0005] The advantages of the present invention are: reusing a large amount of discarded granite saw powder, which not only solves the problems of polluting the environment and occupying land, but also realizes the full utilization of resources, turning waste into treasure; % of metal-containing powder can also be sent to metallurgical enterprises for smelting