Application of organic phosphoric acid type compound to mineral flotation

Abstract

The invention relates to application of an efficient calcium-containing gangue mineral inhibitor to scheelite flotation. The inhibitor is an organic phosphoric acid type compound, production is simple, and performance is stable and reliable. According to the application, the inhibitor is applied to scheelite flotation for the first time, and traditional sodium silicate can be replaced to conduct selective inhibition on difficultly-separated calcium type gangue minerals in particular to calcite, fluorite and the like. The efficient calcium-containing gangue mineral inhibitor is simple and efficient in ingredient, high in selective inhibitory effect, small in using quantity and extremely low in cost.

Description

technical field

[0001] The invention relates to the application of an organic phosphoric acid compound in scheelite flotation, and belongs to the technical field of inhibitors of calcium-containing gangue minerals. Background technique

[0002] Tungsten, a strategic rare metal known as "industrial teeth", has the characteristics of high melting point, high hardness and high corrosion resistance, so it is mostly used as hard alloy and widely used in aerospace, machinery industry, smelting and chemical industry, etc. field. Wolframite accounts for about 20% of the world's total mineable tungsten resources, scheelite accounts for about 70%, and the remaining 10% is black and white tungsten mixed tungsten ore. As the easy-to-exploit wolframite is gradually exhausted, how to utilize scheelite that accounts for a large proportion but is difficult to select is becoming increasingly important.

[0003] In actual production now, the sorting of scheelite basically adopts the method ...

Examples

Embodiment 1

[0053] The acetic acid of 34.0g and the deionized water of 18.0g are added in the four-necked 250ml flask that stirrer, thermometer, condenser tube and dropping funnel are equipped with, start to stir; During the addition process, use a cold water bath to control the reaction temperature not higher than 35°C; after dropping phosphorus trichloride, raise the temperature to 50-60°C for constant temperature esterification reaction, the reaction time is 20min; after the reaction is completed, slowly raise the temperature to 100-60°C 120°C, reflux for 4 hours; after the reaction, pass water vapor for hydrolysis reaction for 6 hours, and steam the residual acetic acid and low boiling point substances, and the rest is the organic phosphoric acid compound inhibitor. The infrared spectrum of the inhibitor is shown in figure 1 shown.

[0054] The obtained organophosphate compound inhibitor was applied to the flotation of a certain scheelite in Hunan, which is a typical scheelite-calcit...

Embodiment 2

[0060] The acetic acid of 34.0g and the deionized water of 18.0g are added in the four-necked 250ml flask that stirrer, thermometer, condenser tube and dropping funnel are equipped with, start to stir; During the addition process, use a cold water bath to control the reaction temperature not higher than 35°C; after dropping phosphorus trichloride, raise the temperature to 50-60°C for constant temperature esterification reaction, the reaction time is 20min; after the reaction is completed, slowly raise the temperature to 100-60°C 120°C, reflux for 4 hours; after the reaction, pass water vapor for hydrolysis reaction for 6 hours, and steam the residual acetic acid and low boiling point substances, and the rest is the organic phosphoric acid compound inhibitor. The infrared spectrum of the inhibitor is shown in figure 1 shown.

[0061] The obtained organophosphate compound inhibitor was applied to the flotation of a scheelite ore in Henan. The ore is scheelite-calcite type ore, ...

Embodiment 3

[0068] The acetic acid of 34.0g and the deionized water of 18.0g are added in the four-necked 250ml flask that stirrer, thermometer, condenser tube and dropping funnel are equipped with, start to stir; During the addition process, use a cold water bath to control the reaction temperature not higher than 35°C; after dropping phosphorus trichloride, raise the temperature to 50-60°C for constant temperature esterification reaction, the reaction time is 20min; after the reaction is completed, slowly raise the temperature to 100-60°C 120°C, reflux for 4 hours; after the reaction, pass water vapor for hydrolysis reaction for 6 hours, and steam the residual acetic acid and low boiling point substances, and the rest is the organic phosphoric acid compound inhibitor. The infrared spectrum of the inhibitor is shown in figure 1 shown.

[0069] The obtained organophosphate compound inhibitor was applied to the flotation of a scheelite ore in Jiangxi. The ore is scheelite-fluorite type or...

technical field

[0001] The invention relates to the application of an organic phosphoric acid compound in scheelite flotation, and belongs to the technical field of inhibitors of calcium-containing gangue minerals. Background technique

[0002] Tungsten, a strategic rare metal known as "industrial teeth", has the characteristics of high melting point, high hardness and high corrosion resistance, so it is mostly used as hard alloy and widely used in aerospace, machinery industry, smelting and chemical industry, etc. field. Wolframite accounts for about 20% of the world's total mineable tungsten resources, scheelite accounts for about 70%, and the remaining 10% is black and white tungsten mixed tungsten ore. As the easy-to-exploit wolframite is gradually exhausted, how to utilize scheelite that accounts for a large proportion but is difficult to select is becoming increasingly important.

[0003] In actual production now, the sorting of scheelite basically adopts the method ...

Examples

Embodiment 1

[0053] The acetic acid of 34.0g and the deionized water of 18.0g are added in the four-necked 250ml flask that stirrer, thermometer, condenser tube and dropping funnel are equipped with, start to stir; During the addition process, use a cold water bath to control the reaction temperature not higher than 35°C; after dropping phosphorus trichloride, raise the temperature to 50-60°C for constant temperature esterification reaction, the reaction time is 20min; after the reaction is completed, slowly raise the temperature to 100-60°C 120°C, reflux for 4 hours; after the reaction, pass water vapor for hydrolysis reaction for 6 hours, and steam the residual acetic acid and low boiling point substances, and the rest is the organic phosphoric acid compound inhibitor. The infrared spectrum of the inhibitor is shown in figure 1 shown.

[0054] The obtained organophosphate compound inhibitor was applied to the flotation of a certain scheelite in Hunan, which is a typical scheelite-calcit...

Embodiment 2

[0060] The acetic acid of 34.0g and the deionized water of 18.0g are added in the four-necked 250ml flask that stirrer, thermometer, condenser tube and dropping funnel are equipped with, start to stir; During the addition process, use a cold water bath to control the reaction temperature not higher than 35°C; after dropping phosphorus trichloride, raise the temperature to 50-60°C for constant temperature esterification reaction, the reaction time is 20min; after the reaction is completed, slowly raise the temperature to 100-60°C 120°C, reflux for 4 hours; after the reaction, pass water vapor for hydrolysis reaction for 6 hours, and steam the residual acetic acid and low boiling point substances, and the rest is the organic phosphoric acid compound inhibitor. The infrared spectrum of the inhibitor is shown in figure 1 shown.

[0061] The obtained organophosphate compound inhibitor was applied to the flotation of a scheelite ore in Henan. The ore is scheelite-calcite type ore, ...

Embodiment 3

[0068] The acetic acid of 34.0g and the deionized water of 18.0g are added in the four-necked 250ml flask that stirrer, thermometer, condenser tube and dropping funnel are equipped with, start to stir; During the addition process, use a cold water bath to control the reaction temperature not higher than 35°C; after dropping phosphorus trichloride, raise the temperature to 50-60°C for constant temperature esterification reaction, the reaction time is 20min; after the reaction is completed, slowly raise the temperature to 100-60°C 120°C, reflux for 4 hours; after the reaction, pass water vapor for hydrolysis reaction for 6 hours, and steam the residual acetic acid and low boiling point substances, and the rest is the organic phosphoric acid compound inhibitor. The infrared spectrum of the inhibitor is shown in figure 1 shown.

[0069] The obtained organophosphate compound inhibitor was applied to the flotation of a scheelite ore in Jiangxi. The ore is scheelite-fluorite type or...

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