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Novel rhombohedral iron ore beneficiation technics

A process and grinding technology, applied in flotation, solid separation, wet separation, etc., can solve the problems of iron component loss, environmental pollution, etc.

Inactive Publication Date: 2008-02-06
HUBEI YICHANG LINSEN INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although different kinds of acids are also relatively strong dissolving agents, when the acid method is used to treat hematite, because the iron ore powder particles are small and are oxides, they are sensitive to acid reactions. is dissolved, resulting in the loss of iron components, and acid treatment also has serious environmental pollution problems

Method used

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  • Novel rhombohedral iron ore beneficiation technics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] 300 tons of hematite main components: Fe: 45%, P: 1.8%, SiO 2 : 18%

[0058] After applying natural silicon and dephosphorizing agent and flotation twice, Fe: 52%, P: 0.36%, SiO 2 : 4.5%

[0059] After the coarse selection spiral chute and the fine selection spiral chute are sorted, Fe: 60%, P: 0.24%, SiO 2 : 4%.

[0060] Sweep through a shaker, Fe: 63% P: 0.1%, SiO 2 : 3.5%.

[0061] Finally, 150t of concentrate was obtained.

[0062] The first grade concentrate is 95t, accounting for 63.33% of the 150t concentrate, Fe: 63%, P: 0.1%, SiO 2 : 3.5%, (exceeding national standards)

[0063] 40t secondary concentrate powder, accounting for 26.67% of 150t concentrate, Fe: 60%, P: 0.25%, SiO 2 : 3.8%, (national standard)

[0064] Mixed use of 15t medium ore, 10% of 150t concentrate, Fe: 56%, P: 0.3%, SiO 2 : 4.5% mixed use of sintered ore.

[0065] The tailings are 129t, accounting for 43% of the 300t ore.

Embodiment 2

[0067] 1000t hematite main components: Fe: 45%, P: 2.0%, SiO 2 : 20%

[0068] After applying natural silicon and dephosphorizing agent and after two flotation, Fe: 52%, P: 0.4%, SiO 2 : 5%

[0069] After the coarse selection spiral chute and the fine selection spiral chute are sorted, Fe: 60%, P: 0.26%, SiO 2 : 4.2%.

[0070] Sweep through a shaker, Fe: 63% P: 0.1%, SiO 2 : 3.5%.

[0071] Finally, 500t of concentrate is obtained.

[0072] The first grade concentrate is 316.7t, accounting for 63.33% of the 500t concentrate, Fe: 63%, P: 0.1%, SiO 2: 3.5%, (exceeding national standards)

[0073] The secondary concentrate powder is 133.33t, accounting for 26.67% of the 500t concentrate, Fe: 60%, P: 0.28%, SiO 2 : 4%, (national standard)

[0074] Mixed use of medium ore 50t, accounting for 10% of 500t concentrate, Fe: 56%, P: 0.3%, SiO 2 : 4.5% mixed use of sintered ore.

[0075] The tailings are 430t, accounting for 43% of the 1000t ore.

Embodiment 3

[0077] 3000t hematite main components: Fe: 45%, P: 2.2%, SiO 2 :twenty two%

[0078] After applying natural silicon and dephosphorizing agent and after two flotation, Fe: 53%, P: 0.44%, SiO 2 : 5.5%

[0079] After the coarse selection spiral chute and the fine selection spiral chute are sorted, Fe: 60%, P: 0.28%, SiO 2 : 4.2%.

[0080] Sweep through a shaker, Fe: 63% P: 0.1%, SiO 2 : 3.5%.

[0081] Finally, 1500t of concentrate was obtained.

[0082] Among them, the first grade concentrate is 950t, accounting for 63.33% of the 1500t concentrate, Fe: 63%, P: 0.1%, SiO 2 : 3.5%, (exceeding national standards)

[0083] 400t secondary concentrate powder, accounting for 26.67% of 1500t concentrate, Fe: 60%, P: 0.26%, SiO 2 : 3.9%, (national standard)

[0084] Mixed use of 150t medium ore, accounting for 10% of 1500t concentrate, Fe: 56%, P: 0.3%, SiO 2 : 4.6% mixed use of sintered ore.

[0085] The tailings are 1290t, accounting for 43% of the 3000t ore.

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Abstract

The present invention belongs to the ore separation technical field, in particular to a mill run technics, which includes the smashing and sieving of ores, grinding and classification, dephosphorization treatment and floatation ore separation, ore separation of hematite rich in phosphor of ore powder classification, wherein the present invention is characterized in that the hematite rich in phosphor is smashed and sieved, grinded and classified, and then undergo twice floatation ore separation to eliminate the phosphor and the silicon, then rough separation, fine separation and scavenging is carried out for the ore powder with the cooperation between a spiral chute and a swinging bed, to improve the standard of the iron and decrease content of the phosphor and silicon to obtain the iron core for smelting, which meets the requirement of the metallurgy industry.

Description

Technical field [0001] The present invention belongs to the technical field of beneficiation technology, and more particularly relates to a hematite beneficiation process. More specifically, the present invention relates to a high-phosphorus hematite beneficiation process that sequentially combines the main operating steps of ore crushing and screening, ore grinding and classification, dephosphorization agent treatment, flotation beneficiation, ore powder classification and the like. Background technique [0002] The chemical composition of hematite is Fe 2 O 3 , The crystal belongs to the oxide mineral of the trigonal crystal system. Hematite is a very widely distributed iron mineral in nature and an important raw material for ironmaking. After being concentrated, the tailings can be used as the main raw material in cement plants or as red pigments. When the phosphorus content of hematite is above 0.5% (weight), it is considered high-phosphorus hematite. Most of the important he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03D1/00B03D1/004B03D103/02
Inventor 黄林森邵金堤
Owner HUBEI YICHANG LINSEN INDAL
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