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Mineral separation process of high-iron nepheline ores

A technology, Tiexia's technology, applied in the field of nepheline mine beneficiation and iron removal, can solve the problems of poor economic benefits, only obtain the only concentrate, and not suitable for large-scale application, and achieve the goal of alleviating land occupation and reducing tailings discharge Effect

Inactive Publication Date: 2016-09-28
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Although some scholars have tried to use the combined process to beneficiate the high iron nepheline ore, they are faced with the problems of high tailings yield (usually up to 40%) and only the only concentrate. The economic benefit is very poor and it is not suitable for scale. application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of beneficiation process of high iron nepheline ore, its steps are as follows:

[0039] (1) Crush and grind the raw ore until the ore with a particle size of -0.074 mm accounts for 85% of the weight of the raw ore, and add water to adjust the slurry to a mass percentage of 35%. The test results show that the raw ore mainly contains Fe 2 o 3 4.18 wt%, K 2 O 3.18wt%, Na 2 O 10.40wt%, Al 2 o 3 21.90wt%, SiO 2 55.32 wt%.

[0040] (2) Carry out weak magnetic separation to the ore pulp of step (1), the magnetic field strength is 0.15 tesla, the magnetic separation product obtained is iron concentrate, and the non-magnetic product is weak magnetic separation tailings.

[0041] (3) adding mass percentage 5% sodium carbonate solution and mass percentage 1% potassium oleate compound polyoxyethylene ether mixed collector solution (potassium oleate compound) to the weak magnetic separation tailings of step (2) The weight ratio of polyoxyethylene ether is 5:1), and th...

Embodiment 2

[0049] (1) Crush and grind the raw ore until the ore with a particle size of -0.074mm accounts for 88% of the raw ore weight, and add water to adjust the slurry to a mass percentage of 40%. The test results show that the raw ore mainly contains Fe 2 o 3 5.43 wt%, K 2 O 4.13wt%, Na 2 O10.15wt%, Al 2 o 3 21.65wt%, SiO 2 54.16 wt%.

[0050] (2) Carry out weak magnetic separation to the ore pulp of step (1), the magnetic field strength is 0.18 tesla, the magnetic separation product obtained is iron concentrate, and the non-magnetic product is weak magnetic separation tailings.

[0051] (3) adding mass percentage 8% sodium carbonate solution and mass percentage 2% potassium oleate compound polyoxyethylene ether mixed collector solution (potassium oleate compound) to the tailings of step (2) The weight ratio of polyoxyethylene ether is 7:1), and the first-stage flotation roughing is carried out. The dosage of sodium carbonate is 750 g / ton of raw ore, the dosage of the mixtur...

Embodiment 3

[0059] A kind of beneficiation process of high iron nepheline ore, its steps are as follows:

[0060] (1) Crushing and grinding the raw ore until the weight of the ore with a particle size of -0.074 mm accounts for 90% of the weight of the raw ore, and adding water to adjust the slurry to a mass percentage of 45%. The test results show that the raw ore mainly contains Fe 2 o 3 7.53 wt%, K 2 O 5.13wt%, Na 2 O 9.40wt%, Al 2 o 3 22.90wt%, SiO 2 53.32 wt%.

[0061] (2) Carry out weak magnetic separation to the ore pulp of step (1), the magnetic field intensity is 0.20 tesla, the magnetic separation product obtained is iron concentrate, and the non-magnetic product is weak magnetic separation tailings.

[0062] (3) adding mass percentage 10% sodium carbonate solution and mass percentage 3% potassium oleate compound polyoxyethylene ether mixed collector solution (potassium oleate compound) to the weak magnetic separation tailings of step (2) The weight ratio of polyoxyethyle...

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Abstract

The invention provides a mineral separation process of high-iron nepheline ores, and particularly relates to a mineral separation process of nepheline ores with high harmful impurity iron content and finer iron-bearing mineral dissemination size. The mineral separation process provided by the invention comprises the steps of (1) utilizing low intensity magnetic separation to separate magnetic iron minerals from crude ores; (2) utilizing flotation to float aegirine-augite, black mica and amphiboles in low-intensity magnetic separation tailings in the step (1); (3) carrying out high intensity magnetic separation, and obtaining non-magnetic products as ore concentrates. The mineral separation process of the high-iron nepheline ores provided by the invention has the beneficial effects that the content of the harmful impurity iron in the nepheline ore concentrates can be remarkably reduced, the comprehensive utilization value of the nepheline ores is improved, and the emission load of the tailings is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of beneficiation and iron removal of nepheline ore with high iron content of harmful impurities, and in particular relates to a beneficiation method for physically separating nepheline from magnetite, neonite, biotite and hornblende. Background technique [0002] Nepheline is a high-aluminum, high-potassium-sodium unsaturated silicate composite non-metallic mineral. In the field of raw materials, it is the only mineral with high-aluminum, high-potassium-sodium composite properties, and contains more than a dozen trace rare earth components. Nepheline ore is widely used in glass, ceramics, polymers, new materials and other fields, requiring high content of potassium and sodium, white color, and low content of iron, titanium and other dyeing elements. The main dark minerals in the ore are magnetite, neonite, biotite and hornblende. [0003] The nepheline deposits in my country are characterized by iron conten...

Claims

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Application Information

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IPC IPC(8): B03C1/30B03D1/02
CPCB03C1/30B03D1/02B03D2203/02
Inventor 曾小波杨耀辉张渊廖祥文
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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