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Method for preventing montmorillonite from stripping in aqueous solution

A technology of montmorillonite and aqueous solution, which is applied in the field of surface chemistry, can solve the problems of increased specific surface area and large consumption of reagents, and achieve the effects of reducing mud entrainment, improving efficiency and reducing consumption of reagents

Inactive Publication Date: 2016-11-23
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Add the quaternary ammonium salt to the montmorillonite suspension, because the montmorillonite is peeled off after entering the water, the particle size of the montmorillonite will decrease, and the specific surface area will increase, resulting in a large consumption of chemicals

Method used

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  • Method for preventing montmorillonite from stripping in aqueous solution
  • Method for preventing montmorillonite from stripping in aqueous solution

Examples

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Embodiment 1

[0014] The montmorillonite mineral used in this example is natural high-purity sodium-based montmorillonite.

[0015] The method step that prevents smectite from peeling off in aqueous solution is as follows:

[0016] Use 0.2g of sodium lauryl sulfate, octadecyltrimethylammonium chloride, cetyltrimethylammonium chloride or cetyltrimethylammonium bromide as the agent, and dissolve the agent in The concentration of 40g / L, 80g / L drug solutions were obtained in water, and then 1g of sodium montmorillonite with a particle size of less than 40 μm was mixed with the drug solution, placed in a grinding machine and stirred at a speed of 150 rev / min for 60 minutes, and then Take out the montmorillonite. At this time, the end surface of the montmorillonite has absorbed the drug, and the end surface has become hydrophobic. When the montmorillonite is immersed in water, water molecules cannot enter the interlayer of the montmorillonite, and the distance between the montmorillonite layers w...

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Abstract

The invention relates to a method for preventing montmorillonite from stripping in an aqueous solution. The method comprises the following steps: firstly dissolving an agent into water to make an agent solution, wherein the agent concentration of the agent solution is 40-80 g / L; then mixing a montmorillonite mineral with the agent solution, wherein the mass ratio of the montmorillonite mineral to the agent solution is (50-100):1; putting the mixture into an ore grinding machine, and mixing at the rotating speed of 100-200rev / min for 50-70 minutes, wherein the agent is lauryl sodium sulfate, octadecyl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, or cetyl trimethyl ammonium bromide. The method is used to fulfill the purpose of preventing montmorillonite mineral from stripping in water, and prevents the montmorillonite mineral from forming a fine particle in the aqueous solution, the carrying of slurry in the floatation of the montmorillonite mineral is reduced, meanwhile, the efficiency of solid-liquid separation in treatment of tail water of an ore treatment plant is also improved.

Description

technical field [0001] The invention belongs to the technical field of surface chemistry, and in particular relates to a method for preventing montmorillonite from peeling off in aqueous solution. Background technique [0002] Montmorillonite is a clay mineral with a layered silicate structure. Metal ions are sandwiched between the layers. The layers are stacked by van der Waals force and the electrostatic force of metal ions. In aqueous solution, the Alkali metal ions can undergo hydration, which increases the distance between layers, and more water enters the sheets, so that interlayer hydration occurs and peels off. When the raw ore of the wet processing plant contains montmorillonite minerals, the particle size of the montmorillonite minerals decreases under the action of interlayer hydration and stripping after entering the water. When these fine-grained montmorillonite enters the flotation process, it will cause a series of mineral processing problems, such as slime e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F103/10
CPCC02F1/52C02F9/00C02F2103/10C02F2305/04
Inventor 赵云良李宏亮宋少先陈天星易浩李洪强
Owner WUHAN UNIV OF TECH
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