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Method for preparing mineral inhibitor for barite

A technology of inhibitor and barite, which is applied in the direction of solid separation and flotation, can solve the problems of low recovery rate of fluorite and barite, complex process, large investment in equipment, etc. Small amount, good inhibitory effect

Inactive Publication Date: 2009-12-02
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the gangue minerals in fluorite minerals are barite minerals and the ore content is similar to that of fluorite minerals, the gravity separation method is generally used to first recover part of the barite to obtain barite concentrate, and add a large amount of water to the tailings after concentration and dehydration. Glass is used as a barite mineral inhibitor, and oleic acid is used as a collector to recover fluorite minerals. This not only complicates the process, but also requires a large investment in equipment, and the recovery rate of fluorite and barite is not high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A preparation method of barite mineral inhibitor, comprising the steps of:

[0012] Put epichlorohydrin:trimethylamine=1:2 into a flat-bottomed flask according to the molar ratio, put it in an ice-bath, seal it and stir it for 2 hours, then let it stand for stratification and take the supernatant as an intermediate product for later use. Put the starch into a flat bottom flask, add the intermediate product, use HCl solution as a catalyst, add Na by 0.1% of the total system mass ratio 2 SO 4 , placed in a water bath at 70°C for 3 hours of heating reaction, and then dried to obtain a powdery substance, which is the inhibitor.

Embodiment 2

[0014] A preparation method of barite mineral inhibitor, comprising the steps of:

[0015] Put epichlorohydrin:trimethylamine=1:3 into a flat-bottomed flask according to the molar ratio, put it in an ice-bath, seal it and stir for 3 hours, then let it stand for stratification and take the supernatant as an intermediate product for later use. Starch is put into flat-bottomed flask, add described intermediate product, make catalyst with HCl solution, add Na by 0.2% of total system mass ratio 2 SO 4 , placed in a water bath at 85° C. for 4 hours, and then dried to obtain a powdery substance, which is the inhibitor.

Embodiment 3

[0017] This example is an application example of the inhibitor described in Example 1 inhibiting barite minerals.

[0018] 1. Mineral raw materials

[0019] A certain mine in Guizhou has a processing capacity of 100 tons per day. The ore used in its production contains 33.92% fluorite and 35.33% barite. The main gangue minerals are silicon dioxide and a small amount of calcium carbonate.

[0020] 2. Pharmaceutical system and operating conditions: water glass 300g / t, oleic acid 500g / t, inhibitor 1000g / t. During flotation, the pH value of the slurry is 6-7. In the flotation process, first add water glass to the ore mill to grind the ore until the mineral monomers are dissociated, then add oil to the flotation machine to perform mixed flotation of fluorite and barite to obtain a mixed concentrate, and then Add inhibitors to inhibit the barite minerals. After seven times of beneficiation, the fluorite concentrate is obtained, and the beneficiated tailings are then floated to obt...

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PUM

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Abstract

The invention discloses a method for preparing a mineral inhibitor for barite, which comprises the steps of: putting epoxy chloropropane and trimethylamine into a flat bottom flask according to the molar ratio of the epoxy chloropropane to the trimethylamine being 1-2:2-6; putting the flat bottom flask into an ice bath; closely stirring the mixture to react for 2 to 3h; standing and layering the obtained product, then taking a supernatant liquid as an intermediate product for standby; putting starch into the flat bottom flask; adding the intermediate product into the starch, taking HCl solution as a catalyst, and adding Na2SO4 which accounts for 0.1 to 0.2 percent of the mass of the total system; putting the mixture in a water bath with a temperature of between 70 and 85 DEG C, and heating the mixture to react for 3 to 4h; and then drying to obtain a powdery substance, namely the inhibitor. The inhibitor can effectively inhibit the barite in fluorite ore concentrate, can improve the grade of the fluorite ore concentrate, and has simple flow, small medicament dosage and low energy consumption.

Description

1. Technical field [0001] The invention relates to a barite mineral depressant, in particular to a barite mineral depressant which needs to preferentially float fluorite to depress barite minerals when fluorite and barite are associated and ore contents are similar. 2. Background technology [0002] At home and abroad, fluorite generally uses water glass as an inhibitor of gangue minerals, and oleic acid or sodium oleate is used as a collector for fluorite minerals for recovery. However, when the gangue minerals in fluorite minerals are barite minerals and the ore content is similar to that of fluorite minerals, the gravity separation method is generally used to first recover part of the barite to obtain barite concentrate, and add a large amount of water to the tailings after concentration and dehydration. Glass is used as a barite mineral inhibitor, and oleic acid is used as a collector to recover fluorite minerals. This not only complicates the process, but also requires ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/01B03D101/06B03D103/02
Inventor 魏宗武陈建华穆枭兰丽红
Owner GUANGXI UNIV
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