Calcium-magnesium collophane ore reverse flotation collector and preparation method thereof

A technology of collophosite and reverse flotation, which is applied in flotation, sulfonic acid preparation, solid separation, etc. It can solve problems such as difficult separation, achieve good separation performance, simple preparation process, and wide-ranging sources

Inactive Publication Date: 2017-09-29
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the close symbiosis of phosphate minerals and carbonate minerals in glenite, and the two types of minerals contain the same cations and have similar surface physical and chemical properties, it is difficult to separate the two types of minerals.

Method used

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  • Calcium-magnesium collophane ore reverse flotation collector and preparation method thereof
  • Calcium-magnesium collophane ore reverse flotation collector and preparation method thereof
  • Calcium-magnesium collophane ore reverse flotation collector and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 , the reverse flotation collector of calcium-magnesium collophosphine is prepared according to the following steps:

[0027] (1) 18.08g of stearic acid is placed in a four-necked flask equipped with a reflux condenser, a stirrer, a thermometer and a constant pressure dropping funnel, and the temperature is adjusted to be 60°C. After the stearic acid is completely melted, stir evenly, gradually Add chlorosulfonic acid dropwise, the rate of chlorosulfonic acid addition is 1 second / drop, and the ratio of the amount of stearic acid to chlorosulfonic acid is 1.0:1.2. After the chlorosulfonic acid is added dropwise, the temperature is raised to 90 within 0.5h. ℃, sulfonation reaction for 6h, then aging at 90°C for 1h, and cooling down to 60°C.

[0028] (2) Add hydrogen peroxide with 5% stearic acid mass into the sulfonated product solution, and reflux and bleach at a constant temperature of 60° C. for 1 hour. The obtained bleached product is a viscous light ...

Embodiment 2

[0032] The collector is prepared as follows:

[0033] (1) 18.08g of stearic acid is placed in a four-necked flask equipped with a reflux condenser, a stirrer, a thermometer and a constant pressure dropping funnel, and the temperature is adjusted to be 65°C. After the stearic acid is completely melted, stir evenly, gradually Add chlorosulfonic acid dropwise, the rate of chlorosulfonic acid addition is 1 second / drop, and the ratio of the amount of stearic acid to chlorosulfonic acid is 1.0:1.8. After the chlorosulfonic acid is added dropwise, the temperature is raised to 90 within 0.5h. ℃, sulfonation reaction for 2 hours, then aged at 90 ℃ for 2 hours, and cooled to 60 ℃.

[0034] (2) Add hydrogen peroxide with 3% stearic acid mass into the sulfonated product solution, reflux and bleach at a constant temperature of 60° C. for 1 hour, and the obtained bleached product is a viscous light yellow liquid.

[0035] (3) Then add water-acetone mixture to the sulfonation product soluti...

Embodiment 3

[0038] The collector is prepared as follows:

[0039] (1) Put 16.31g of palmitic acid in a four-necked flask equipped with a reflux condenser, a stirrer, a thermometer and a constant pressure dropping funnel, and adjust the temperature to 60°C. After the stearic acid is completely melted, stir evenly and dropwise Add chlorosulfonic acid, the rate of chlorosulfonic acid addition is 3 seconds / drop, the ratio of the amount of palmitic acid to chlorosulfonic acid is 1.0:1.4, after the addition of chlorosulfonic acid is completed, the temperature is raised to 90°C within 0.5h, The sulfonation reaction was carried out for 3 hours, followed by aging at a constant temperature of 90°C for 1 hour, and the temperature was lowered to 60°C.

[0040] (2) Add hydrogen peroxide with 5% palmitic acid mass to the sulfonated product solution, and reflux and bleach at a constant temperature of 55° C. for 2 hours. The obtained bleached product is a viscous light yellow liquid.

[0041] (3) Then a...

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Abstract

The invention relates to a calcium-magnesium collophane ore reverse flotation collector and a preparation method thereof. The calcium-magnesium collophane ore reverse flotation collector is prepared and obtained in the modes that saturated fatty acid serves as a reaction raw material, chlorosulfonic acid is selected as a sulfonating agent to conduct sulfonating reaction, and then a sulfonating product is subjected to bleaching and neutralization reaction. The calcium-magnesium collophane ore reverse flotation collector and the preparation method thereof have the following beneficial effects that (1) according to the collector, a sulfonic group with the extremely strong polarity is selected to serve as a polar group of the collector, so that separation performance of the collector over phosphate minerals and carbonate minerals is improved; the saturated fatty acid is selected as a non-polar group of the collector, so that collecting performance of the collector over carbonate minerals is improved; and the product raw material source is widespread, the price is low, and certain cost price superiority and wide industrialization superiority are achieved; and (2) the preparation process of the calcium-magnesium collophane ore reverse flotation collector is simple, easy to operate and low in production cost, industrialized production is easy to realize, meanwhile, no three-waste discharge exists in production, and environment friendliness and non-pollution are achieved.

Description

technical field [0001] The invention relates to a novel phosphate rock reverse flotation collector, in particular to a calcium-magnesium collophosphate reverse flotation collector and a preparation method thereof. Background technique [0002] Phosphate rock is an important strategic resource in my country. It is not only an important chemical mineral raw material for the production of phosphate fertilizer, yellow phosphorus and phosphoric acid, but also the material basis of fine phosphorus chemical industry. It has an important position and role in national economic and social development. my country's phosphate rock resources are abundant but not rich, and there are many middle and low-grade ores. Among them, those with MgO content greater than 4% are refractory calcium-magnesium collophosphine, and phosphorus concentrates with MgO content greater than 2% are difficult to be directly used in phosphorus chemical production. . Due to the close intergrowth of phosphate miner...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/012C07C303/08C07C309/17B03D101/02B03D103/06
CPCB03D1/012B03D2201/02B03D2203/06C07C303/08C07C309/17
Inventor 梁欢潘志权周红程清蓉张华丽
Owner WUHAN INSTITUTE OF TECHNOLOGY
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