A kind of treatment method of polyhalite ore solution mining liquid
A polyhalite and solution mining technology, applied in the direction of magnesium halide, alkali metal chloride, magnesium chloride, etc., can solve complex and difficult-to-control problems, achieve the effects of increasing sources, improving utilization efficiency, and shortening the production cycle
Inactive Publication Date: 2018-02-27
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI +1
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[0006] Since the composition of solution mining fluid of polyhalite ore is very different from that of general intercrystalline brine, if the solution mining fluid is developed and utilized alone, the salt precipitation process is divided into multiple stages, which is relatively complicated and difficult to control
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[0026] The following are examples of the present invention, which are only used to explain the present invention and not to limit.
[0027] Take the development and utilization of polyhalite ore solution in the Great Salt Beach as an example as follows, it has similar potassium ion content of 1.0-2.0wt%, magnesium ion content of 0.25-0.6wt%, and chloride ion content of 12- 18%, the melt solution composed of 3.0-4.0wt% sulfate ion content and 9-11wt% sodium ion content can also be applied to the method of the present invention.
[0028] The composition of solution mining solution of polyhalite mine in Great Salt Flat is shown in Table 1:
[0029] Table 1 Composition of brine in solution mining test
[0030]
[0031] The salt field process development is carried out on the obtained solution extraction liquid, and its precipitation route can be found in figure 1 ,
[0032] Sodium chloride→sodium chloride, potassium glauberite, langbeinite→sodium chloride, langbeinite, potas...
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The invention discloses a treatment method of a polyhalite ore dissolution production fluid. The method includes a step of mixing the dissolution production fluid with production raw brine to obtain raw material brine which can be used for producing sodium chloride, potassium chloride, magnesium sulfate and / or carnallite. The dissolution production fluid is the brine which is obtained through a dissolution production process of polyhalite ore. The method omits a step of new-building a salt field, wherein the dissolution production fluid is fed into a production salt field with the raw brine together to generate salt under sun in the salt field. The method reduces production cost, reduces technical process and reduces production period, increases sources of production raw materials and increases utilization rate of the dissolution production fluid.
Description
technical field [0001] The invention belongs to the field of salt lake chemistry, and in particular relates to a processing method for polyhalite ore solution mining liquid. Background technique [0002] my country is a large potassium-consuming country, and potassium salt resources are non-renewable resources. At present, my country mainly focuses on the development of liquid phase potassium resources (soluble potassium resources), and high-grade potassium-containing liquid phase resources (general liquid phase resources) are mainly used in industrial production. The utilization and research of low-grade, slow-soluble, insoluble or solid potassium-containing minerals are not yet mature, and there is no large-scale development and utilization. [0003] However, with the continuous consumption of easy-to-develop potassium salt resources, the research and utilization of difficult-to-develop potassium salt resources will receive more and more attention, and its development and u...
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IPC IPC(8): C01D3/08C01F5/40C01F5/30C01D5/10
CPCC01D3/08C01D5/10C01F5/30C01F5/40C01P2006/80
Inventor 张志宏何茂雄张永明杜建宁赵冬梅董生发马艳芳付振海王婧胡天琦王健康
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI