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Selective flocculation and flotation method of fine-grained siderite

A siderite and fine particle technology is applied in the field of mineral processing to achieve the effect of improving concentrate grade and recovery rate and reducing impact

Active Publication Date: 2019-10-11
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the problem that the existing "step-by-step flotation" process is difficult to deal with the adsorption of fine-grained siderite on the surface of hematite and quartz minerals, the present invention provides a selective flocculation method for fine-grained siderite, which aims to control Dispersion and selective flocculation, reduce the heterogeneous coagulation of siderite, hematite and quartz, thereby reducing the adverse effect of fine-grained siderite on hematite reverse flotation, and improving the grade of hematite reverse flotation concentrate and recovery

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  • Selective flocculation and flotation method of fine-grained siderite

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Embodiment 1

[0024] In the embodiment of the present invention, the pure minerals are selected from carbonate-containing hematite ore in Anshan, Liaoning. After hand-selecting, the lump ore has a purity of 85% siderite, a purity of 98% hematite and a purity of 99% quartz. Crushing, grinding, hematite is sorted and sieved by shaking table to get -0.074mm particle size pure minerals, siderite is stirred and ground to -0.010mm, quartz is ground to -0.074mm by ceramics. The proportion of artificial mixed ore is 50% of quartz, 40% of hematite, and 10% of fine-grained siderite. The obtained raw ore has a TFe content of 30.05% and a FeO content of 5.15%. The siderite content is expressed relative to the FeO content.

[0025] The present embodiment carries out flotation to mixed ore, carries out according to the following steps:

[0026] Add mixed ore and water to the flotation tank to make a slurry with a concentration of 20%, stir for 2 minutes at a stirring speed of 1400 rpm, adjust the pH of t...

Embodiment 2

[0029] In the embodiment of the present invention, the pure minerals are selected from carbonate-containing hematite ore in Anshan, Liaoning. After hand-selecting, the lump ore has a purity of 85% siderite, a purity of 98% hematite and a purity of 99% quartz. Crushing, grinding, hematite is sorted and sieved by shaking table to get -0.074mm particle size pure minerals, siderite is stirred and ground to -0.010mm, quartz is ground to -0.074mm by ceramics. The proportion of artificial mixed ore is 50% of quartz, 40% of hematite, and 10% of fine-grained siderite. The obtained raw ore has a TFe content of 30.05% and a FeO content of 5.15%. The siderite content is expressed relative to the FeO content.

[0030] The present embodiment carries out flotation to mixed ore, carries out according to the following steps:

[0031] Add mixed ore and water to the flotation tank to make a slurry with a concentration of 20%, stir for 2 minutes at a stirring speed of 1400 rpm, adjust the pH of t...

Embodiment 3

[0034] In the embodiment of the present invention, the pure minerals are selected from carbonate-containing hematite ore in Anshan, Liaoning. After hand-selecting, the lump ore has a purity of 85% siderite, a purity of 98% hematite and a purity of 99% quartz. Crushing, grinding, hematite is sorted and sieved by shaking table to get -0.074mm particle size pure minerals, siderite is stirred and ground to -0.010mm, quartz is ground to -0.074mm by ceramics. The proportion of artificial mixed ore is 50% of quartz, 40% of hematite, and 10% of fine-grained siderite. The obtained raw ore has a TFe content of 30.05% and a FeO content of 5.15%. The siderite content is expressed relative to the FeO content.

[0035] The present embodiment carries out flotation to mixed ore, carries out according to the following steps:

[0036]Add mixed ore and water to the flotation tank to make a slurry with a concentration of 20%, stir for 2 minutes at a stirring speed of 1400 rpm, adjust the pH of th...

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Abstract

The invention relates to a method for selective flocculation and flotation of fine-grained siderite, belonging to the technical field of mineral processing. The method of the present invention selectively flocculates fine-grained siderite. First, the dispersant citric acid is added to reduce the heterogeneous aggregation of siderite, hematite and quartz, and then the selective flocculant α-starch is added to achieve For the flocculation of fine-grained siderite and the suppression of hematite, the anionic collector sodium oleate is used for flotation. The selective flocculation method of fine-grained siderite of the present invention can significantly reduce the impact of fine-grained siderite on hematite reverse flotation, improve the recovery rate and grade of iron in iron concentrate, and contribute to the effective utilization of carbonic acid-containing carbonic acid. Salt iron ore is of great significance.

Description

technical field [0001] The invention relates to a selective flocculation and flotation method for fine-grained siderite, which belongs to the technical field of mineral processing. Background technique [0002] As the world economy enters a period of in-depth adjustment, the development of China's mining industry is facing new challenges and opportunities, and the iron ore industry is also facing challenges under the new economic normal. Restricted by the characteristics of "poor, thin, miscellaneous, and scattered" and the low utilization level, the supply of iron ore resources in my country is far from meeting the requirements of the development of the iron and steel industry and resource reserves. In order to ensure the survival and development of my country's iron and steel enterprises and reduce their dependence on imported iron ore, combined with the national policy of "efficient mining of mineral resources, green processing and efficient utilization", carry out resear...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D3/06B03D1/002B03D1/008B03B1/00B03D103/04B03D101/02B03D101/06
Inventor 李丽匣郝海青袁致涛卢冀伟
Owner NORTHEASTERN UNIV LIAONING