Na2CO3 and NaHCO3 double-horizontal-section classification mining model and process

Abstract

The invention discloses a Na2CO3 and NaHCO3 double-horizontal-section classification mining model. The model comprises a first ore body layer section, a second ore body layer section, a water injection well and a halogen return well; the first ore body layer section and the second ore body layer section are separated by a surrounding rod section; and the water injection well and the halogen returnwell both penetrate through the first ore body layer section, the surrounding rock section and the second ore body layer section. Aiming at the problems of drilling water-soluble mining of trona oresand mixed mining of different mineral components, trona ores with different mineral components can be classified and mined in a targeted manner, brine with different components is fed into differentproduction device systems, and the problems that the trona ores with different mineral components cannot be classified and mined in a targeted manner, a ground production device and system are high inoccupancy rate, and production energy consumption is large are solved. The invention further discloses a mining process. According to the mining process, trona mineral resources of Na2CO3 and NaHCO3produced in sections and interbeds can be economically and efficiently mined according to categories so as to enter different processing technological processes.

Description

Technical field: [0001] The invention relates to a mining model and technology, in particular to a Na 2 CO 3 and NaHCO 3 The mining model and technology of bilevel classification. Background technique: [0002] Trona is the main chemical composition of Na 2 CO 3 and NaHCO 3 , most of the current domestic trona mines are Na 2 CO 3 and NaHCO 3 Symbiosis. As far as the mining technology is concerned, it is mostly water-soluble mining and dry mining. After years of research, these two mining processes have achieved many major breakthroughs. The current method is: when the burial is relatively shallow, mechanical dry mining technology is used, and the ore is machined. Dig out and then dissolve the products needed for production (such as the Green River alkali mine in the United States, etc.); when the burial is deep and the ore layer is thick, water-soluble mining is used to achieve economical and effective mining purposes; the methods widely used at home and abroad are ...

AI Technical Summary

Problems solved by technology

A certain trona mine that is being developed recently, during the drilling and core sampling test analysis, it was found that Na in some areas of the mining area 2 CO 3 and NaHCO 3 It is segmented and interlayered, because Na 2 CO 3 and NaHCO 3 The processing technology is different. If the conventional water solution mining model and technology are adopted, the extracted Na 2 CO 3 and NaHCO 3 Re-decomposition is required to enter the next production process, which increases the cost of separation

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