Application method of novel surfactant in bauxite reverse flotation

A surfactant and application method technology, applied in flotation, solid separation and other directions, can solve the problems of poor bauxite concentrate grade and recovery rate, poor bauxite reverse flotation effect, poor solubility and dispersibility, etc. Achieve the effect of improving grade and recovery rate, promoting and applying value, and solving poor solubility

Inactive Publication Date: 2019-12-03
JIANGXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a new type of surfactant application method in bauxite reverse flotation, and solve the problem of poor selectivity of existing fatty amine collectors to bauxite , Large dosage, poor solubility and dispersibility at low temperature, resulting in poor grade and recovery rate of reverse flotation bauxite concentrate, especially the problem of poor reverse flotation effect of bauxite under low temperature conditions

Method used

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  • Application method of novel surfactant in bauxite reverse flotation
  • Application method of novel surfactant in bauxite reverse flotation
  • Application method of novel surfactant in bauxite reverse flotation

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Example 1: Application of 2-butene-1,4-bis(tetradecylpiperidinyl ammonium chloride) in reverse flotation of bauxite (flotation temperature: 25-28°C)

[0030] A bauxite ore sample in Henan, the raw ore contains Al 2 o 3 62.37%, SiO 2 11.03%, the ratio of aluminum to silicon is A / S 5.65, the ore is ground to -200 mesh, accounting for 70%, the concentration of the flotation pulp is 30%, and the dosage of starch is 500g / t, and the dosage of collector is 110g / t. For ore roughing flotation, starch 400g / t and collector 80g / t are added in the first sweep, starch 400g / t and collector 60g / t are added in the second sweep, and the flotation process flow chart is attached. figure 1 . Table 1 shows the flotation comparison test results of the new surfactant 2-butene-1,4-bis(tetradecylpiperidinyl ammonium chloride) and the commonly used collector tetradecylamine in the present invention. As can be seen from Table 1, compared with the commonly used collector tetradecylamine, wh...

Embodiment 2

[0036] Example 2: Application of New Surfactant in Flotation of Pure Minerals of Kaolinite, Pyrophyllite and Illite (Flotation Temperature: 15-20℃)

[0037] Put 2.0g of kaolinite, pyrophyllite and illite pure minerals with a particle size of -0.074mm~+0.0374mm in a 40mL flotation tank, add 30mL of distilled water, stir for 2min to make it evenly mixed. Flotation is carried out under the condition of 60g / t, and the flow chart of the flotation process is shown in the attachment figure 2 . Table 2 shows the flotation comparison test results of the novel collector among the present invention and two commonly used collectors, dodecylamine and tetradecylamine. It can be seen from Table 2 that the collection capacity of the new collector for kaolinite, pyrophyllite and illite is significantly stronger than that of the two commonly used aliphatic amine collectors.

[0038] Table 2 Comparative experimental results of collector flotation pure minerals

[0039]

Embodiment 3

[0040] Example 3: Application of 2-butene-1,4-bis(tetradecylpiperidinyl ammonium chloride) in reverse flotation of bauxite (flotation temperature: 15-20°C)

[0041] A bauxite ore sample, the raw ore contains Al 2 o 3 59.18%, SiO 2 13.13%, the ratio of aluminum to silicon is A / S 4.51, the ore is ground to -200 mesh, accounting for 85%, the concentration of the flotation pulp is 35%, the pH value of the pulp is adjusted to 5.1 when the sulfuric acid dosage is 1000g / t, and the starch dosage is 800g / t. Under the conditions of 230g / t of collector and 55g / t of foaming agent No. 2 oil, roughing flotation of bauxite was carried out, 100g / t of collector was added for sweeping, 300g / t of starch was added for one-time selection, and flotation The selection process flow chart is attached image 3 . Flotation of novel surfactant 2-butene-1,4-bis(tetradecylpiperidinyl ammonium chloride) and commonly used collector tetradecyltrimethylammonium chloride in the present invention The comp...

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Abstract

The invention discloses an application method of a novel surfactant in bauxite reverse flotation. In the bauxite reverse flotation, the novel surfactant as shown in a formula I is used as a collector,the novel surfactant, as the collector, has two minerophilic groups in the molecule, has relatively strong ability to interact with the mineral surface, and has relatively good selectivity for the target mineral. The novel surfactant has two hydrophobic groups to increase hydrophobic ability of the collector, and has relatively strong ability to collect the target mineral. Compared with flotationcollectors commonly used in the prior art, the novel surfactant has the characteristics that flotation efficiency and recovery rate can be effectively improved, and the like. At the same time, because the molecule contains an unsaturated alkenyl, the novel surfactant has the characteristic of low Krafft point. Compared with flotation collectors commonly used in the prior art, the novel surfactanthas the characteristics that flotation efficiency and recovery rate of bauxite reverse flotation can be effectively improved, the novel surfactant can be used at low temperature conditions, and the like.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to an application method of a novel surfactant in reverse flotation of bauxite. Background technique [0002] Aluminum is the second largest metal in terms of output and consumption after iron. It is an essential basic raw material for the development of the national economy and national defense construction. It is related to the national economy by as much as 91%. Many industries such as construction, machinery, transportation, aerospace, power, electrical and packaging. With the rapid development of China, the demand for alumina is increasing day by day, but the reality of serious shortage of bauxite resources has greatly restricted the development of the aluminum industry. According to the data released by the Ministry of Land and Resources in 2010, by 2009, my country has identified 873 million tons of basic bauxite reserves that can be used, accounting f...

Claims

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Application Information

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IPC IPC(8): B03D1/01B03D101/02B03D103/04
CPCB03D1/01B03D2201/02B03D2203/04
Inventor 黄志强余新阳邱廷省刘祖文李立清廖春发赵奎何桂春艾光华冯博
Owner JIANGXI UNIV OF SCI & TECH
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