Beneficiation method for recovering molybdenum from tungsten tin associated sulfide ore bulk concentrate

Abstract

The invention discloses a beneficiation method for recovering molybdenum from a tungsten tin associated sulfide ore bulk concentrate. The beneficiation method is characterized by comprising the following steps: after the heating reagent removal is performed for a sulfide ore bulk concentrate obtained from a tungsten tin associated sulfide ore; water is added for mixing pulp; quicklime is added for stirring to adjust the pulp; an inhibitor and a collecting agent are added for primary roughing to obtain a primary roughing concentrate and a primary roughing tailing; the collecting agent is added in the primary roughing tailing for secondary selection to obtain a secondary selection concentrate and a secondary selection tailing; and three times of blank selection are performed for the secondary selection concentrate to obtain a molybdenum concentrate. The method obtains the molybdenum concentrate with a molybdenum grade of 48-52% and a molybdenum recovery rate of 87-93%, reduces the molybdenum selection cost, generates no waste water and other substances harmful to the environment, and is an environment-friendly beneficiation method. The method is suitable for recovering molybdenum from the tungsten tin associated sulfide ore bulk concentrate.

Description

Technical field

[0001] The invention belongs to the technical field of mineral processing, and relates to a beneficiation method for recovering molybdenum from a mixed concentrate of tungsten-tin associated sulfide ore, in particular to a high-efficiency environmentally friendly demedication of the mixed concentrate of tungsten-tin associated sulfide ore and the use of an environmentally friendly inhibitor The beneficiation method. Background technique

[0002] With the development of the national economy, the demand for molybdenum metal is gradually increasing, and easy-to-select molybdenum resources are gradually decreasing, and complex and difficult-to-select low-grade molybdenum resources are gradually becoming the object of development and utilization, effectively improving the current comprehensive level of development and utilization of molybdenum resources Become a top priority. In addition, with the continuous reduction of mineral resources, the use of mines is often no...

Examples

Embodiment 1

[0031] The ore feed is a mixed concentrate of tin-associated sulfide ore obtained by multiple floating operations of a tin-associated polymetallic sulfide ore, of which the molybdenum grade is 1.28%.

[0032] Stir and heat the mixed concentrate with a concentration of 50% at 90°C for 90 minutes, add water to the mixed concentrate of the sulfide ore after heating and de-drugging to a slurry concentration of 34%, add quicklime to adjust the slurry pH to 12, and stir for 3 minutes ; Add sodium humate 200g / t and starch 200g / t, stir for 3 minutes, add kerosene 110g / t, stir for 2 minutes, perform a roughing operation, get a roughing concentrate and a roughing tailings; Add kerosene 40 / t to the tailings, stir for 2 minutes, do a sweeping, get a sweeping concentrate and a sweeping tailings; a sweeping concentrate enters a roughing; in a sweeping tailings Add kerosene 20g / t, stir for 2 minutes, do the second sweeping, get the second sweeping concentrate and the second sweeping tailings; t...

Embodiment 2

[0034] The feed is a mixed concentrate of tungsten-associated sulfide ore obtained from a tungsten ore-associated polymetallic sulfide ore after multiple floating operations, of which the molybdenum grade is 0.95%.

[0035] Stir and heat the mixed concentrate with a concentration of 60% at 80°C for 100 minutes, add water to the mixed concentrate of the sulfide ore after heating to remove the drug to a slurry concentration of 35%, add quicklime to adjust the slurry pH to 12.5, and stir for 3 minutes ; Add dextrin 450g / t, stir for 3 minutes; add diesel 150g / t, stir for 2 minutes, perform a roughing operation, get a roughing concentrate and a roughing tailing; add diesel to the roughing tailings 50 / t, stirring for 2 minutes; do one sweep, get one sweep concentrate and one sweep tailings; one sweep concentrate enters a rough selection; add 30g / t diesel to the one sweep tailings, Stir for 2 minutes; do the second sweeping to get the second sweeping concentrate and the second sweeping ...

Embodiment 3

[0037] The feed ore is a mixed concentrate of tungsten-associated sulfide ore obtained through mixed flotation of a tungsten ore associated polymetallic sulfide ore, of which the molybdenum grade is 0.82%.

[0038] Stir and heat the mixed concentrate with a concentration of 55% at 90°C for 60 minutes, add water to the mixed concentrate of the sulfide ore after heating and de-agent to adjust the slurry to 33%, add quicklime to adjust the slurry pH to 12, stir for 3 minutes, add Carboxymethyl cellulose 200g / t and sodium humate 250g / t, stir for 3 minutes, add kerosene 120g / t, stir for 2 minutes, perform a roughing operation to obtain a roughing concentrate and a roughing tailing; Add kerosene 45 / t to the tailings of one roughing, stir for 2 minutes, do one sweeping, get one sweeping concentrate and one sweeping tailings; one sweeping concentrate enters one roughing; after one sweeping tailings Add 30g / t of kerosene to the ore, stir for 2 minutes, and do the second sweeping to obtain...

Technical field

[0001] The invention belongs to the technical field of mineral processing, and relates to a beneficiation method for recovering molybdenum from a mixed concentrate of tungsten-tin associated sulfide ore, in particular to a high-efficiency environmentally friendly demedication of the mixed concentrate of tungsten-tin associated sulfide ore and the use of an environmentally friendly inhibitor The beneficiation method. Background technique

[0002] With the development of the national economy, the demand for molybdenum metal is gradually increasing, and easy-to-select molybdenum resources are gradually decreasing, and complex and difficult-to-select low-grade molybdenum resources are gradually becoming the object of development and utilization, effectively improving the current comprehensive level of development and utilization of molybdenum resources Become a top priority. In addition, with the continuous reduction of mineral resources, the use of mines is often no...

Examples

Embodiment 1

[0031] The ore feed is a mixed concentrate of tin-associated sulfide ore obtained by multiple floating operations of a tin-associated polymetallic sulfide ore, of which the molybdenum grade is 1.28%.

[0032] Stir and heat the mixed concentrate with a concentration of 50% at 90°C for 90 minutes, add water to the mixed concentrate of the sulfide ore after heating and de-drugging to a slurry concentration of 34%, add quicklime to adjust the slurry pH to 12, and stir for 3 minutes ; Add sodium humate 200g / t and starch 200g / t, stir for 3 minutes, add kerosene 110g / t, stir for 2 minutes, perform a roughing operation, get a roughing concentrate and a roughing tailings; Add kerosene 40 / t to the tailings, stir for 2 minutes, do a sweeping, get a sweeping concentrate and a sweeping tailings; a sweeping concentrate enters a roughing; in a sweeping tailings Add kerosene 20g / t, stir for 2 minutes, do the second sweeping, get the second sweeping concentrate and the second sweeping tailings; t...

Embodiment 2

[0034] The feed is a mixed concentrate of tungsten-associated sulfide ore obtained from a tungsten ore-associated polymetallic sulfide ore after multiple floating operations, of which the molybdenum grade is 0.95%.

[0035] Stir and heat the mixed concentrate with a concentration of 60% at 80°C for 100 minutes, add water to the mixed concentrate of the sulfide ore after heating to remove the drug to a slurry concentration of 35%, add quicklime to adjust the slurry pH to 12.5, and stir for 3 minutes ; Add dextrin 450g / t, stir for 3 minutes; add diesel 150g / t, stir for 2 minutes, perform a roughing operation, get a roughing concentrate and a roughing tailing; add diesel to the roughing tailings 50 / t, stirring for 2 minutes; do one sweep, get one sweep concentrate and one sweep tailings; one sweep concentrate enters a rough selection; add 30g / t diesel to the one sweep tailings, Stir for 2 minutes; do the second sweeping to get the second sweeping concentrate and the second sweeping ...

Embodiment 3

[0037] The feed ore is a mixed concentrate of tungsten-associated sulfide ore obtained through mixed flotation of a tungsten ore associated polymetallic sulfide ore, of which the molybdenum grade is 0.82%.

[0038] Stir and heat the mixed concentrate with a concentration of 55% at 90°C for 60 minutes, add water to the mixed concentrate of the sulfide ore after heating and de-agent to adjust the slurry to 33%, add quicklime to adjust the slurry pH to 12, stir for 3 minutes, add Carboxymethyl cellulose 200g / t and sodium humate 250g / t, stir for 3 minutes, add kerosene 120g / t, stir for 2 minutes, perform a roughing operation to obtain a roughing concentrate and a roughing tailing; Add kerosene 45 / t to the tailings of one roughing, stir for 2 minutes, do one sweeping, get one sweeping concentrate and one sweeping tailings; one sweeping concentrate enters one roughing; after one sweeping tailings Add 30g / t of kerosene to the ore, stir for 2 minutes, and do the second sweeping to obtain...

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