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Method for rapidly manufacturing industrial salt by utilizing sylvine mine and device

A technology of potassium salt ore and industrial salt, which is applied in the field of rapid production of industrial salt from potash ore, can solve the problems of high impurity content, large water consumption, shortage of resources and raw materials, etc., and achieve broad application prospects, advantages of energy saving and consumption reduction, The effect of fast evaporation process

Active Publication Date: 2011-08-03
SHANXI UNIV
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Problems solved by technology

[0002] In the process of using potash ore to produce potash fertilizer, most of the primary raw materials for potash fertilizer production are raw ore made from solution-mined brine. The water consumption is huge, the impurity content in the raw ore is high, and a large amount of old brine is discharged during the ore-forming process, resulting in low utilization efficiency of brine resources; There is a structural shortage of raw materials, which makes it difficult for the preparation of raw ore to meet the needs of downstream production, affects the supply of raw materials for subsequent production, and seriously hampers the normal development of production

Method used

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  • Method for rapidly manufacturing industrial salt by utilizing sylvine mine and device

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Embodiment 1

[0018] The raw materials used are taken from potash mines in the salt lake area of ​​the Qaidam Basin in Qinghai. The brine obtained after solution mining of potash mines contains 12.53% NaCl, 1.25% KCl, and 12.77% MgCl 2 , 4.01% Na 2 SO 4 . The device for producing industrial salt adopts figure 1 In the shown device, the heat source of the heater 1 is solar energy, and the desalinator 2 is a membrane still.

[0019] The operation flow of the rapid production of industrial salt from potash mine: the brine is heated to 95°C in the heater 1, enters the desalinator 2 and is separated into desalinated water and nearly saturated concentrated brine, and the concentrated brine enters the evaporator 3; the evaporator 3, the heat exchange area ratio of the first heating chamber 4, the second heating chamber 6, and the third heating chamber 8 is 5:2:1 in turn, and the heating steam flows in the first heating chamber 4, the second heating chamber 6, and the third heating chamber in tu...

Embodiment 2

[0022] The raw materials used are taken from potash mines in the salt lake area of ​​the Qaidam Basin in Qinghai. The brine obtained after solution mining of potash mines contains 6.01% NaCl, 7.10% KCl, and 10.22% MgCl 2 , 6.12% Na 2 SO 4 . The device for producing industrial salt adopts figure 1 In the shown device, the heat source of the heater 1 is factory waste heat, and the desalinator 2 is a humidifier-dehumidifier.

[0023] The operation process of the potash salt ore rapid production industrial salt device is the same as that of Example 1, except that the brine is heated to 90°C in the heater 1, and the first heating chamber 4, the second heating chamber 6, and the third heating chamber in the evaporator 3 The heat exchange area ratio of the heating chamber 8 is 10:2.2:1, and the concentrated liquid phase volumes in the first evaporating chamber 5, the second evaporating chamber 7 and the third evaporating chamber 9 are respectively controlled to 31% of the original...

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Abstract

The invention provides a method for rapidly manufacturing industrial salt by utilizing sylvine mine and a device, belonging to the technical field of comprehensive utilization of mineral salt and brine. The method for manufacturing the industrial slat is as follows: the solution mining is carried out on the sylvine mine and brine is extracted, the brine is initially concentrated by low grade heatenergy and then is evaporated step by step to obtain products including carnallite, bischofite and the like; desalination water and condensate water are circulated and used for solution mining; and waste heat is simultaneously recycled. The device for manufacturing industrial salt comprises a heater, a desalination apparatus and a heat exchanger. The invention has simple process route, high efficiency of production process, is convenient to use the low grade heat energy, has the energy saving advantage, can extract various inorganic salt products by classification and realizes the comprehensive utilization of energy sources and resources.

Description

technical field [0001] The invention relates to the comprehensive utilization of mineral salt and brine, in particular to a method and a device for quickly producing industrial salt from potassium salt ore. Background technique [0002] In the process of using potash ore to produce potash fertilizer, most of the primary raw materials for potash fertilizer production are raw ore made from solution-mined brine. The water consumption is huge, the impurity content in the raw ore is high, and a large amount of old brine is discharged during the ore-forming process, resulting in low utilization efficiency of brine resources; There is a structural shortage of raw materials, which makes the preparation of raw ore difficult to meet the downstream production needs, affects the supply of raw materials for subsequent production, and seriously hampers the normal development of production. [0003] An effective way to improve production efficiency is to innovate the existing salt product...

Claims

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Application Information

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IPC IPC(8): C01D3/06C01D5/00C01F5/30
CPCY02P20/10Y02P20/129
Inventor 程芳琴成怀刚马金元赵静
Owner SHANXI UNIV
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