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Novel anti-flotation desiliconization cationic collector as well as preparation method and application thereof

A kind of reverse flotation desilication, cationic technology, applied in flotation, solid separation and other directions, can solve the problems of poor selectivity, poor fluidity, lag in research and development of cationic collectors, etc., and achieve the effect of high recovery rate

Inactive Publication Date: 2019-08-02
WUHAN INSTITUTE OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in practical applications, the cationic reverse flotation process has not been widely promoted. The main reason is that the development of cationic collectors is seriously lagging behind, and there are several primary amine cationic collectors that can be selected, such as dodecylamine, etc. In practice, it is found that there are serious shortcomings, such as large amount of foaming, sticky foam, difficult to defoam, poor fluidity, difficult to handle foam products, poor selectivity, very sensitive to slime, etc.

Method used

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  • Novel anti-flotation desiliconization cationic collector as well as preparation method and application thereof

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Effect test

Embodiment 1

[0027] The preparation of a novel reverse flotation desiliconization cationic collector, the specific steps are as follows:

[0028] Weigh 18.5g of coconut oil diamine and place it in a 250ml flask, then put the flask into a constant temperature oil bath with magnetic stirring, start stirring and heat up to 130°C, when the coconut oil diamine is in a liquid state, successively dissolve 4.5g Glacial acetic acid and 6.5 g of cyanamide aqueous solution with a mass fraction of 50% were added dropwise into the flask, and reacted for 2 hours to obtain a polyamine-based cationic surfactant. Then the temperature was lowered to 80°C, 7.5g of dodecylamine was placed in the flask, and stirred for 20 minutes to finally obtain a new reverse flotation desilication cationic type with a compounding ratio of polyamine-based cationic surfactant and dodecylamine of 8:2. Collector.

Embodiment 2

[0030] The preparation of a novel reverse flotation desiliconization cationic collector, the specific steps are as follows:

[0031] Weigh 18.5g of coconut oil diamine and place it in a 250ml flask, then put the flask into a constant temperature oil bath with magnetic stirring, start stirring and heat up to 110°C, when the coconut oil diamine is in a liquid state, successively dissolve 4.5g Glacial acetic acid and 6.5 g of 50% cyanamide aqueous solution were added dropwise into the flask and reacted for 3 hours to obtain a polyamine-based cationic surfactant. Then cool down to 50°C, put 3.3g of primary coconut oil amine in the flask, stir for 30min, and finally obtain a new type of reverse flotation desiliconization with a compound ratio of polyamine-based cationic surfactant and primary coconut oil amine of 9:1. Cationic collectors.

Embodiment 3

[0033] The preparation of a novel reverse flotation desiliconization cationic collector, the specific steps are as follows:

[0034] The weighed 18.5g coconut oil diamine is placed in a 250ml flask, then the flask is put into a constant temperature oil bath with magnetic stirring, the stirring is started and the temperature is raised to 140°C, when the coconut oil diamine is in a liquid state, 4.5 Add 1 g of glacial acetic acid and 6.5 g of 50% cyanamide aqueous solution dropwise into the flask, and react for 4 hours to obtain a polyamine-based cationic surfactant. Then cool down to 60°C, put 12.6g of coconut oil diamine in the flask, stir for 25 minutes, and finally obtain a new type of collophanite flotation with a compounding ratio of polyamine-based cationic surfactant and coconut oil diamine of 7:3. Collector.

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Abstract

The invention provides a collophanite anti-flotation desiliconization collector as well as a preparation method and application thereof. The collector is obtained by heating, stirring, mixing and compounding a polyamine-based cationic surfactant with organic amine dodecylamine, cocoamine or cocodiamine in a certain mass ratio, wherein the polyamine-based cationic surfactant is synthesized from cocodiamine, an aqueous monocyanamide solution and glacial acetic acid. The collector provided by the invention not only has good solubility and good foam brittleness, but also has relatively strong selective harvesting ability on silicate minerals, and can be applied to a cationic anti-flotation process to prepare fine phosphate rock from collophanite.

Description

technical field [0001] The invention relates to the technical field of collophosite flotation, in particular to a novel reverse flotation desiliconization cationic collector and its preparation method and application. Background technique [0002] my country's phosphate rock reserves are abundant, but more than 70% are low- and medium-grade collophosphine. At present, the flotation processes that can be used for sorting silicon-calcium phosphate rock include positive and negative combined flotation process and double reverse flotation process. In the positive and negative combined flotation process, heating the pulp will inevitably increase energy consumption. The problem of rising production costs; and double reverse flotation is not only simple in process, but also its cationic flotation collector has good low temperature resistance, and can realize industrial production at about 10 °C. In contrast, the cationic reverse flotation process can save a lot of heating costs an...

Claims

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Application Information

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IPC IPC(8): B03D1/01B03D101/02
CPCB03D1/01B03D2201/02
Inventor 罗惠华刘幸蔡忠俊张振翼黄晨蕾丁一刚
Owner WUHAN INSTITUTE OF TECHNOLOGY