Method for pouring calcium magnesium salt mud into brine well cavity

Abstract

The invention provides a method for pouring calcium magnesium salt mud into a brine well cavity. The method for pouring the calcium magnesium salt mud into the brine well cavity, provided by the invention, comprises the following steps: (1) adding the calcium magnesium salt mud into a stirring barrel to be diluted and stirred; (2) pumping the diluted calcium magnesium salt mud into a neutralizingbarrel, adding condensate water and acid liquid, and adjusting the solid-to-liquid ratio to be not higher than 5%, and the pH value to be within 8.2-8.8; (3), pumping a product obtained in the step (2) into a slag storage barrel, and supplementing with clear water; (4) pouring the product in the slag storage barrel into the brine well cavity for brine mining. According to the invention, the problem of the environment and groundwater pollution during airing, transportation and burying processes of the calcium magnesium salt mud is avoided, so that excellent environmental and social and economicbenefits are obtained.

Description

Technical field: [0001] The invention relates to a method for pouring calcium-magnesium salt mud into a brine well dissolution cavity, and belongs to the technical field of metallurgy and minerals. Background technique: [0002] Calcium-magnesium salt mud is mainly solid waste produced by salt-making enterprises in the process of brine purification to remove calcium and magnesium ions from brine. Due to the different types of brine mines and the selected brine purification processes in various salt-making enterprises, the components in the calcium-magnesium salt mud are slightly different, but the main components are calcium carbonate and magnesium hydroxide, and there are also a small amount of calcium sulfate and some insoluble Substances and soluble substances such as sodium chloride and sodium sulfate. Calcium-magnesium salt mud has been reported as a desulfurization additive in boiler furnaces, but it is not widely used because of the sodium chloride contained in it, w...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for filling the cavity of a brine well with calcium-magnesium salt mud in view of the above existing problems, which avoids the environment and groundwater pollution problems caused by the calcium-magnesium salt mud in the process of drying, transporting and burying, and achieves Very good environmental, social and economic benefits