Method for preparing coal mine water additive by concomitancy of diatomite purification

A technology of diatomite and treatment agent, which is applied in the field of preparing coal mine water treatment agent by using diatomite to purify mesophyll, which can solve the problems of high cost of treatment agent and inability to form industrial products.

Inactive Publication Date: 2008-05-21
XUNDIAN XIANFENG KIESELGUR DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The treatment agent has high cost and cannot be formed into an industrial product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: 0.5wt% cetyltrimethylammonium bromide, 2.0wt% P123 are dissolved in water, be made into rare earth ion solution, adjust this solution pH with sodium hydroxide to be 8; Purify diatomite The middle and low grade diatomite with a silicon dioxide content of 60% associated in the process is soaked in distilled water for 20 minutes, filtered and dried at 100°C to a water content of 3%; Add the liquid weight ratio to the prepared above-mentioned rare earth ion solution, stir at room temperature for 45 minutes, let stand and soak for 15 hours, filter the solution to obtain filter cake and filtrate; put the filter cake in an oven at 70°C for drying, crush , and sieve to obtain diatomite coal washing water and mine water treatment agent.

Embodiment 2

[0016] Embodiment 2: 0.5wt% sodium metaphosphate, 0.5wt% tetramethylammonium bromide, 2.5wt% P123 are dissolved in water, be made into rare earth ion solution, adjust this solution pH with sodium hydroxide to be 10; Purify silicon The middle and low-grade diatomite with a silicon dioxide content of 50% associated in the alginate refining process is soaked in distilled water for 30 minutes, filtered and dried at 130°C to a water content of 2%; the diatomite is prepared according to 1: Add the prepared rare earth ion solution with a solid-to-liquid weight ratio of 20, stir at room temperature for 60 minutes, let stand and soak for 15 to 20 hours, filter the solution to obtain filter cake and filtrate; put the filter cake in an oven with a temperature of 100°C Drying, crushing, and sieving to obtain diatomite coal washing water and mine water treatment agent.

Embodiment 3

[0017] Embodiment 3: 1.0wt% sodium metaphosphate, 0.5wt% hexadecyltrimethylammonium bromide, 3.5wt% P123 are dissolved in water, are made into rare earth ion solution, adjust this solution pH with sodium hydroxide to be 9 ; Soak the medium and low-grade diatomite with a silicon dioxide content of 60% associated with the process of purifying diatom concentrate in distilled water for 15 minutes, filter and dry at 100°C to a water content of 5%; the diatom The soil is added to the prepared rare earth ion solution according to the solid-to-liquid weight ratio of 1:25, stirred at room temperature for 45 minutes, left to stand for immersion for 15 hours, and the solution is filtered to obtain a filter cake and filtrate; the filter cake is placed at a temperature of 60 Dry in an oven at ℃, crush and sieve to obtain diatomite coal washing water and mine water treatment agent.

[0018] (2) Treatment agent of the present invention is used for coal mine coal washing water and mine water ...

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Abstract

A method of using biology in the diatomite purification to prepare coal washing water of coal mine and mine water treatment agent relates to the preparation and the application of coal washing water and mine water treatment agent. Low grade diatomite in associated SiO2 in a pickling essential diatom earth purifying process is used by the invention to be immersed in distilled water, filtered and dried until the water content is less than 5%. P123, sodium metaphosphate, cetyl trimethyl ammonium bromide and tetramethylammonium bromide are dissolved and prepared to be solution, the weight percent concentration of which is 2.5-5. The pH value is regulated to be 8-11. The weight ratio of the diatomite to the solution is 1 to 10-1 to 30. The solution is stirred and filtered to obtain a filter cake, which is dried to collect a resultant. And the weight percent concentration of P123 in the solution is better 2.5. When used, the treatment agent of 0.1-0.3g/L is put in the coal washing water or the mine water to be stirred for thirty seconds and kept statically. Supernatant liquid is siphoned. Diatomite coal sludge of lower layer is recycled. The invention has the advantages of short flocculation time and less energy consumption. The suspended substance sedimentation rate and the COD removal rate are improved. Fallouts are easy to be removed. And the objectives of recycling the mine water and coal water and reducing the environmental pollutions are achieved.

Description

Technical field [0001] The invention relates to the preparation and application of a water treatment agent for coal mine washing water and mine water. Background technique [0002] To produce diatomite filter aids or building materials, it is necessary to purify diatomite raw ore into diatomite concentrate. The purification process is to boil diatomite with sulfuric acid to remove aluminum, iron, calcium, magnesium and other elements in diatomite, and a large amount of secondary The medium and low-grade diatomite with a silicon oxide content of about 60% forms a water-insoluble colloid and deposits in the mining area, posing a huge potential threat to the natural environment. For example, diatomaceous earth located in Xianfeng Township, Xundian County, Yunnan Province has a thick ore layer and geological reserves of 77.59 million tons. The diatomite ore layer in the mining area is directly covered on the huge thick lignite layer, rich in organic matter, with a burning vecto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/28B01J20/14
Inventor 夏非吴飞云李明聪李银潘梅仙习砚晶王俊凯
Owner XUNDIAN XIANFENG KIESELGUR DEV
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