Low-grade magnesite pulp preparing system and method for flotation

Abstract

The invention provides a low-grade magnesite pulp preparing system and method for flotation. The system comprises a magnesite grinding machine, a dust remover, a stirring tank and a storage tank, wherein a discharge opening of the magnesite grinding machine is connected with a feed opening of the dust remover; a discharge opening of the dust remover is connected with a feed opening of the stirring tank; a discharge opening of the stirring tank is connected with a feed opening of the storage tank through a magnesite pulp pump; and a water inlet of the stirring tank communicates with a water port. The method comprises the following steps of grinding magnesite; performing dust removal; and preparing magnesite pulp. Through the adoption of the low-grade magnesite pulp preparing system disclosed by the invention, the electricity consumed in the production of every 1 ton of magnesite pulp products is reduced from 35kWh to 18kWh or less (by dry-basis magnesite); and the occupied area of a manufacturing plant of the same scale can be reduced by 70% or above, and the investment of capital construction can be reduced by 45% or above. The magnesite product prepared by the method disclosed by the invention is good in grain gradation distribution, so that subsequent procedures are easy to operate and run, and the quality of final products is guaranteed. The low-grade magnesite pulp preparing system disclosed by the invention is high in degree of automation, and few in operation stations, so that the labor cost is greatly reduced.

Description

technical field [0001] The invention relates to a slurry preparation system and method, in particular to a system and method for preparing low-grade magnesite slurry for flotation. Background technique [0002] With the technological progress of the country, the requirements for magnesia refractories in various related industries are getting higher and higher. my country is rich in magnesite resources. According to statistics, the reserves have reached 3.145 billion tons, and the annual mining volume has exceeded 30 million tons, ranking first in the world, but the grade is generally not high. After decades of "chicken coop" mining, high-quality magnesite resources are becoming less and less, and low-grade magnesite cannot meet market demand, which requires the use of flotation, thermal separation and chemical methods to reduce low-grade magnesite The impurities in the high-grade magnesite are removed to meet the market demand. [0003] The flotation method is to first mak...

AI Technical Summary

Problems solved by technology

At present, the wet grinding process is generally used to prepare magnesite slurry, that is, the closed-circuit process of the mill and the spiral classifier is adopted. The existing equipment level of this process is limited, and the phenomenon of running, popping, dripping and leaking during the grinding process is serious. ; The production capacity of a single machine is low, mostly below 50t / h (dry basis); the power consumption is large, and the power consumption per ton of product (dry basis) is as high as 35kWh; the floor area is large, the infrastructure investment is high, and the operating environment is poor; the grinding fineness and The quality is still difficult to guarantee, which affects the operation and operation of its subsequent processes. It is a backward production process that urgently needs to be updated.

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