The beneficiation method of tungsten polymetallic ore

Abstract

The invention discloses a beneficiation method for tungsten polymetallic ore. The beneficiation method comprises the following steps of (1) grinding the tungsten polymetallic ore to form powder, (2) adding the powder to magnetized water to form ore pulp, then, adding regulators, foaming agents and first collecting agents, feeding in air to form a first foam layer, obtaining tailings after removing the first foam layer, (3) adding first inhibitors, activators and second collecting agents to the tailings, feeding in air to form a second foam layer, collecting the second foam layer to obtain white tungsten rough concentrate, and (4) concentrating the white tungsten rough concentrate till the mass of the white tungsten rough concentrate ranges from 55% to 70% of the mass of the white tungsten rough concentrate before concentration, heating the white tungsten rough concentrate to the temperature which ranges from 85 DEG C to 95 DEG C, adding second inhibitors, feeding in air to generate a third foam layer, and collecting the third foam layer to obtain white tungsten concentrate. According to the beneficiation method for the tungsten polymetallic ore, the magnetized water is used in the technological process, difference between floatability of the white tungsten ore and floatability of calcium minerals can be increased, flotation separation of the white tungsten ore and the calcium minerals such as fluorite and calcite is achieved, and the recovery rate of the white tungsten ore is increased.

Description

technical field

[0001] The invention relates to the technical field of beneficiation, in particular to a beneficiation method of tungsten polymetallic ore. Background technique

[0002] Complex tungsten polymetallic ores refer to metal ores containing gangue minerals such as sulfide ore, scheelite, quartz, fluorite, and calcite. Complex tungsten polymetallic ores usually use flotation process to separate different metal ores. The typical process for separating scheelite from complex tungsten polymetallic ore is "high alkali process". Separation of gangue minerals such as calcite.

[0003] The traditional beneficiation method of complex tungsten polymetallic ore has a low recovery rate of scheelite. Contents of the invention

[0004] Based on this, it is necessary to provide a beneficiation method of tungsten polymetallic ore with high recovery rate of scheelite.

[0005] A method for beneficiation of tungsten polymetallic ore, comprising the steps of:

[0006] Grindin...

Examples

Embodiment 1

[0051] The tungsten polymetallic ore with a tungsten grade of 0.15% is ground into powder. Among the powders, the weight of the powder with particle size less than 0.074mm accounts for 75% of the total weight of all powders.

[0052] Add the powder into the magnetized water to form a slurry, then add 2000g / t of sodium carbonate, 30g / t of No. 2 oil and 40g / t of xanthate, stir for 3min, and at room temperature, the flow rate is 0.6m 3 / (m 2 .min) air forms the first foam layer, and tailings are obtained after removing the first foam layer. Then collect the removed foam of the first foam layer to obtain sulfide ore. Magnetized water is water that has been magnetized for 50 minutes under the condition of a magnetic field strength of 400kA / m.

[0053] Add 4000g / t of water glass, 600g / t of lead nitrate and 300g / t of oxidized paraffin wax soap to the tailings. 3 / (m 2 .min) of air to form the second foam layer, and collect the foam in the second foam layer to obtain scheelite co...

Embodiment 2

[0056] The tungsten polymetallic ore with a tungsten grade of 0.31% is ground into powder. Among the powders, the weight of powders with particle size less than 0.074mm accounts for 85% of the total weight of all powders.

[0057] Add the powder into magnetized water to form a slurry, then add 4000g / t of sodium carbonate, 15g / t of No. 2 oil and 30g / t of ethyl disulfide, stir for 5min, and at room temperature, the flow rate of the feed is 1.2m 3 / (m 2 .min) air forms the first foam layer, and tailings are obtained after removing the first foam layer. Then the foam obtained by removing the first foam layer is collected to obtain sulfide ore. Magnetized water is water that has been magnetized for 30 minutes under the condition of a magnetic field strength of 600kA / m.

[0058] Add a mixture of 4000g / t water glass and 1000g / t aluminum sulfate, 400g / t lead nitrate and 500g / t dihydrocarbyl dithiourea to the tailings. 3 / (m 2 .min) of air to form the second foam layer, and collec...

Embodiment 3

[0061] The tungsten polymetallic ore with a tungsten grade of 0.4% is ground into powder. Among the powders, the weight of the powder with particle size less than 0.074mm accounts for 80% of the total weight of all powders.

[0062] Add the powder into magnetized water to form a slurry, then add 3000g / t of sodium carbonate, 20g / t of No. 2 oil and 20g / t of kerosene, stir for 4min, and at room temperature, the flow rate is 0.8m 3 / (m 2 .min) air forms the first foam layer, and tailings are obtained after removing the first foam layer. Then collect the removed foam of the first foam layer to obtain sulfide ore. Magnetized water is water that has been magnetized for 60 minutes under the condition of a magnetic field strength of 700kA / m.

[0063] Add 6000g / t of water glass, 500g / t of lead nitrate and 500g / t of oxidized paraffin wax soap to the tailings, and at normal temperature, the flow rate is 0.8m 3 / (m 2 .min) of air to form the second foam layer, and collect the foam in ...

technical field

[0001] The invention relates to the technical field of beneficiation, in particular to a beneficiation method of tungsten polymetallic ore. Background technique

[0002] Complex tungsten polymetallic ores refer to metal ores containing gangue minerals such as sulfide ore, scheelite, quartz, fluorite, and calcite. Complex tungsten polymetallic ores usually use flotation process to separate different metal ores. The typical process for separating scheelite from complex tungsten polymetallic ore is "high alkali process". Separation of gangue minerals such as calcite.

[0003] The traditional beneficiation method of complex tungsten polymetallic ore has a low recovery rate of scheelite. Contents of the invention

[0004] Based on this, it is necessary to provide a beneficiation method of tungsten polymetallic ore with high recovery rate of scheelite.

[0005] A method for beneficiation of tungsten polymetallic ore, comprising the steps of:

[0006] Grindin...

Examples

Embodiment 1

[0051] The tungsten polymetallic ore with a tungsten grade of 0.15% is ground into powder. Among the powders, the weight of the powder with particle size less than 0.074mm accounts for 75% of the total weight of all powders.

[0052] Add the powder into the magnetized water to form a slurry, then add 2000g / t of sodium carbonate, 30g / t of No. 2 oil and 40g / t of xanthate, stir for 3min, and at room temperature, the flow rate is 0.6m 3 / (m 2 .min) air forms the first foam layer, and tailings are obtained after removing the first foam layer. Then collect the removed foam of the first foam layer to obtain sulfide ore. Magnetized water is water that has been magnetized for 50 minutes under the condition of a magnetic field strength of 400kA / m.

[0053] Add 4000g / t of water glass, 600g / t of lead nitrate and 300g / t of oxidized paraffin wax soap to the tailings. 3 / (m 2 .min) of air to form the second foam layer, and collect the foam in the second foam layer to obtain scheelite co...

Embodiment 2

[0056] The tungsten polymetallic ore with a tungsten grade of 0.31% is ground into powder. Among the powders, the weight of powders with particle size less than 0.074mm accounts for 85% of the total weight of all powders.

[0057] Add the powder into magnetized water to form a slurry, then add 4000g / t of sodium carbonate, 15g / t of No. 2 oil and 30g / t of ethyl disulfide, stir for 5min, and at room temperature, the flow rate of the feed is 1.2m 3 / (m 2 .min) air forms the first foam layer, and tailings are obtained after removing the first foam layer. Then the foam obtained by removing the first foam layer is collected to obtain sulfide ore. Magnetized water is water that has been magnetized for 30 minutes under the condition of a magnetic field strength of 600kA / m.

[0058] Add a mixture of 4000g / t water glass and 1000g / t aluminum sulfate, 400g / t lead nitrate and 500g / t dihydrocarbyl dithiourea to the tailings. 3 / (m 2 .min) of air to form the second foam layer, and collec...

Embodiment 3

[0061] The tungsten polymetallic ore with a tungsten grade of 0.4% is ground into powder. Among the powders, the weight of the powder with particle size less than 0.074mm accounts for 80% of the total weight of all powders.

[0062] Add the powder into magnetized water to form a slurry, then add 3000g / t of sodium carbonate, 20g / t of No. 2 oil and 20g / t of kerosene, stir for 4min, and at room temperature, the flow rate is 0.8m 3 / (m 2 .min) air forms the first foam layer, and tailings are obtained after removing the first foam layer. Then collect the removed foam of the first foam layer to obtain sulfide ore. Magnetized water is water that has been magnetized for 60 minutes under the condition of a magnetic field strength of 700kA / m.

[0063] Add 6000g / t of water glass, 500g / t of lead nitrate and 500g / t of oxidized paraffin wax soap to the tailings, and at normal temperature, the flow rate is 0.8m 3 / (m 2 .min) of air to form the second foam layer, and collect the foam in ...

Images