A method for separating potassium chloride in flotation froth and a dissolution kettle

A technology for dissolving kettles and potassium chloride, applied in the direction of alkali metal chlorides, etc., can solve the problems of long process flow and high cost, and achieve the effect of simple and efficient operation, low cost and low cost recovery

Active Publication Date: 2017-09-15
QINGHAI SALT LAKE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a method for separating potassium chloride in flotation foam and a dissolving kettle, which is used to solve the problems of long technical process and high cost in the existing method for separating potassium chloride in flotation foam

Method used

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  • A method for separating potassium chloride in flotation froth and a dissolution kettle
  • A method for separating potassium chloride in flotation froth and a dissolution kettle
  • A method for separating potassium chloride in flotation froth and a dissolution kettle

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Embodiment 1

[0043] Such as figure 1 As shown, the present embodiment provides a method for separating potassium chloride in the flotation froth, and proceeds according to the following steps:

[0044]Step 1: Using the original carnallite (that is, the carnallite collected from the salt lake) as the raw material, the flotation foam is obtained by the reverse flotation method: specifically, the flotation agent is added to the original carnallite to make the original carnallite The surface of sodium chloride in the stone generates hydrophobicity, so that the bubbles float to the surface of the slurry to form flotation foam. The output of the flotation froth obtained in the process of this embodiment is 40 tons / hour.

[0045] Take a sample to obtain the potassium chloride mass m contained in every 100g solid dry basis contained in the flotation foam 1 : Take out a small amount of flotation foam, realize solid-liquid separation to it, extract the solid phase therein, divide the solid phase i...

Embodiment 2

[0071] Such as figure 1 As shown, the present embodiment provides a method for separating potassium chloride in the flotation froth, and proceeds according to the following steps:

[0072] Step 1: Using the original carnallite (that is, the carnallite collected from the salt lake) as the raw material, the flotation foam is obtained by the reverse flotation method: specifically, the flotation agent is added to the original carnallite to make the original carnallite The surface of sodium chloride in the stone generates hydrophobicity, so that the bubbles float to the surface of the slurry to form flotation foam. The output of the flotation froth obtained in the process of this embodiment is 50 tons / hour.

[0073] Take a sample to obtain the potassium chloride content m contained in every 100g solid dry basis contained in the flotation foam 2 : Take out a small amount of flotation foam, realize solid-liquid separation to it, extract the solid phase therein, divide the solid phase...

Embodiment 3

[0081] Such as figure 1 As shown, the present embodiment provides a method for separating potassium chloride in the flotation froth, and proceeds according to the following steps:

[0082] Step 1: Using the original carnallite (that is, the carnallite collected from the salt lake) as the raw material, the flotation foam is obtained by the reverse flotation method: specifically, the flotation agent is added to the original carnallite to make the original carnallite The surface of sodium chloride in the stone generates hydrophobicity, so that the bubbles float to the surface of the slurry to form flotation foam. The output of the flotation froth obtained in the process of this embodiment is 30 tons / hour.

[0083] Take a sample to obtain the potassium chloride content m contained in every 100g solid dry basis contained in the flotation foam 3 : Take out a small amount of flotation foam, realize solid-liquid separation to it, extract the solid phase therein, divide the solid pha...

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Abstract

The invention discloses a method for separating potassium chloride in flotation froth and a stirring vessel. The method comprises the steps that the flotation froth is input into the stirring vessel which can enable the flotation froth to flow vertically and mixed with water and old brine, solid potassium chloride in the flotation froth is dissolved, sodium chloride solid particles are sedimented, a mother solution with potassium chloride is dried in air to be separated out, and the main component is secondary carnallite containing potassium chloride. The stirring vessel applying the method comprises a vessel body, a stirrer, a center barrel and a flow guiding barrel, wherein the stirrer, the center barrel and the flow guiding barrel are sequentially arranged from interior to exterior in a sleeved mode. A mother solution outlet is formed in the upper portion of the vessel body, a sedimentation outlet is formed in the lower portion of the vessel body, the first end of at least two feeding pipes arranged in the stirring vessel is arranged inside the center barrel. The stirring vessel is combined with the method, so that potassium chloride in reverse flotation froth can be efficiently extracted; compared with a traditional method for recycling potassium chloride in reverse flotation froth, the efficiency is higher, the process is shorter, the cost is lower, the fresh water consumption is smaller.

Description

technical field [0001] The invention relates to the technical field of reverse flotation, in particular to a method for separating potassium chloride in flotation foam and a dissolution kettle. Background technique [0002] Carnallite is the final product of evaporation in magnesium and potassium salt lakes, and often coexists with halite and potassium halite. The sodium chloride content in the carnallite collected in the salt lake (hereinafter referred to as the original carnallite) is very high, which generally also contains potassium chloride and magnesium chloride, in order to combine the potassium chloride and magnesium chloride in the original carnallite Sodium chloride is separated out, which is often achieved by reverse flotation. [0003] The original carnallite is dissociated into monomer particles by crushing or grinding to form the original carnallite system. The reverse flotation method refers to adding flotation agents to the original carnallite system, so tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01D3/08
CPCC01D3/08
Inventor 于雪峰王石军王树龙刘万平牛莉慧刘利德王文海张生太屈小荣李生廷景海德师敏
Owner QINGHAI SALT LAKE IND
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