Method for removing surface and impurities of quartz ore

Abstract

The invention provides a method for removing the surface and impurities of quartz ore. The method comprises the following steps: firstly, placing crushed stones into a plastic storage bin and closing the plastic storage bin; then adding an acid solution which is heated to 50-110 DEG C and has the concentration of more than 25% by mass percent into the storage bin through a pipeline; producing an acid gas through an atomizer; recovering the acid gas and the acid solution after the high-temperature acid gas and the acid solution react with the surface and impurities of quartz stone in the closed storage bin, and washing the crushed stones with water; obtaining clean quartz stone, neutralizing waste water generated by washing the crushed stones with alkali or lime, and performing cyclic utilization or standard emission. The method provided by the invention is simple in process, high in efficiency, low in cost, good in effect, free from environmental pollution and suitable for wide popularization and application.

Description

technical field [0001] The invention provides a method for removing the surface and impurities of quartz ore, especially a process for removing iron oxide, yellow skin and improving the quality of the quartz ore, belonging to the technical field of ore mining and processing. Background technique [0002] At present, to remove the iron oxide and yellow skin of the quartz stone surface, a cement pickling pool is built. The bottom wall of the pool is covered with granite to prevent corrosion. The pool is divided into five to six warehouses. The washing pool covers a total area of ​​about 500 square meters, and the investment in the pickling pool is 150,000 to 200,000 yuan. It is difficult to operate in rainy and snowy days. The process of removing impurities in the pickling pool has a long treatment cycle, and the cleaning cycle of crushed stone from feeding to reaction is 7 to 10 days. The winter time is longer, the acid consumption is large, and the loss is large. The acid co...

AI Technical Summary

Problems solved by technology

[0002] At present, to remove the iron oxide and yellow skin of the quartz stone surface, a cement pickling pool is built. The bottom wall of the pool is covered with granite to prevent corrosion. The pool is divided into five to six warehouses. The washing pool covers a total area of ​​about 500 square meters, and the investment in the pickling pool is 150,000 to 200,000 yuan. It is difficult to operate in rainy and snowy days

The process of removing impurities in the pickling pool has a long treatment cycle, and the cleaning cycle of crushed stone from feeding to reaction is 7 to 10 days. The winter time is longer, the acid consumption is large, and the loss is large. The acid consumption per ton of crushed stone is at least 30 catties. The large amount of acid directly leads to a huge amount of sewage generated by washing and removing impurities from the gravel, and the amount of soda lime used to treat sewage is also large and expensive

Moreover, the process of using pickling pool to remove impurities is very polluting to the environment. After the acid is dripped on the gravel, it seeps into the ground from the granite floor. It is difficult to collect the cleaning sewage, which is not conducive to neutralization treatment and discharge.

The cement pickling pool covers a large area, and the volatilization of acid will cause great air pollution

At the same time acid pouring, cleaning, shoveling, heavy smell, great harm to workers, high labor costs