AU2021101523A4 - A Flotation Recovery Method for Refractory Lead Oxide Minerals - Google Patents

A Flotation Recovery Method for Refractory Lead Oxide Minerals Download PDF

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AU2021101523A4
AU2021101523A4 AU2021101523A AU2021101523A AU2021101523A4 AU 2021101523 A4 AU2021101523 A4 AU 2021101523A4 AU 2021101523 A AU2021101523 A AU 2021101523A AU 2021101523 A AU2021101523 A AU 2021101523A AU 2021101523 A4 AU2021101523 A4 AU 2021101523A4
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Prior art keywords
mass ratio
flotation
minerals
lead oxide
sodium carbonate
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AU2021101523A
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Jianhua Chen
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Guangxi University
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Guangxi University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/018—Mixtures of inorganic and organic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
    • B03B1/04—Conditioning for facilitating separation by altering physical properties of the matter to be treated by additives
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B13/00—Obtaining lead
    • C22B13/04—Obtaining lead by wet processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/007—Modifying reagents for adjusting pH or conductivity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00—Specified materials treated by the flotation agents; specified applications
    • B03D2203/02—Ores
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

A flotation recovery method for refractory lead oxide minerals comprises the following steps of: (1) firstly adding 300 g of the lead oxide minerals and 100 ml of water into a ball mill for a laboratory, and then adding 10 kg/t of sodium carbonate and 4 kg/t of sodium silicate solid into the ball mill and stirring for 3 minutes; (2) putting the ground minerals in the step (1) into a flotation cell, adding a proper amount of water to dilute the ground minerals into pulp with the concentration being 38wt% and the pH being 8 to 9, and stirring for 3 minutes; (3) adding 100 g/t of uniformly mixed solution with the concentration being 1% prepared by benzyl-mevalonate and sodium carbonate in a mass ratio of 3: 1 and stirring and reacting for 3 minutes; (4) adding 300 g/t of uniformly mixed solution with the concentration being 1%, and stirring and reacting for 3 minutes, wherein the uniformly mixed solution is prepared through a mixed reagent prepared by carboxymethyl fiber, benzothiazolethiol and sodium hydroxide in a mass ratio of 1: 1.5: 1 and sodium carbonate in a mass ratio of 3: 1. A lead oxide product can be prepared by aeration, foam removal and flotation.

Description

A Flotation Recovery Method for Refractory Lead Oxide Minerals
TECHNICAL FIELD
The invention relates to the technical field of beneficiation, in particular to
a flotation recovery method for refractory lead oxide minerals.
BACKGROUND
In the flotation of the lead oxide minerals, the lead oxide minerals are
generally first vulcanized with sodium sulfide, and then added with xanthate for
flotation. Due to the complex composition, lead oxide not only contains soluble
salts such as gypsum and copper sulfate, oxides and sulfides such as
carbonates, sulfates, silicates and arsenates, but also generates a large
amount of cinnamon soil in the oxidation process, and is extremely easy to
mud, making the flotation process difficult to control. The conventional
vulcanization method is to vulcanize the lead oxide minerals in an alkaline
solution with a vulcanizing agent, so that lead oxide minerals are coated with
sulfide mineral films on surfaces, and then are floated by a xanthate collector.
This method is poor in flotation effect for ores which are high in content of
refractory lead minerals, and have little or no limestones and dolomite in
gangue minerals. In addition, a traditional sulphidizing xanthate method is
basically ineffective for complex lead oxides such as lead sulfate, iron-lead
vanadium and phosphor-chlorine-arsenic-lead.
SUMMARY
The objective of the invention is to provide a flotation recovery method for
refractory lead oxide minerals, which is a method capable of directly
recovering lead in high-alkalinity lead oxide mineral flotation.
To achieve the objective, the invention adopts the following technical
scheme: a flotation recovery method for refractory lead oxide minerals
includes the following steps of:
(1) firstly adding 300 g of the lead oxide minerals and 100 ml of water into
a ball mill for a laboratory, and then adding 10 kg/t of sodium carbonate and 4
kg/t of sodium silicate solid into the ball mill and stirring for 3 minutes;
(2) putting the ground minerals in the step (1) into a flotation cell, adding a
proper amount of water to dilute the ground minerals into pulp with the
concentration being 38wt.% and the pH being 8 to 9 due to sodium carbonate
was added before,, and stirring for 3 minutes;
(3) adding 100 g/t of uniformly mixed solution with the concentration being
1% prepared by benzyl-mevalonate and sodium carbonate in a mass ratio of 3:
1 and stirring and reacting for 3 minutes;
(4) adding 300 g/t of uniformly mixed solution with the concentration being
1%, stirring and reacting for 3 minutes, and starting aeration, followed by foam
removal and flotation, thereby obtaining a lead oxide product, wherein the
uniformly mixed solution is prepared through vegetable oil A prepared by
carboxymethyl fiber, benzothiazolethiol and sodium hydroxide in a mass ratio
of 1: 1.5: 1 and sodium carbonate in a mass ratio of 3: 1
Unless otherwise stated, the percentages stated in the invention are all
percentage by mass, based on 100% in total.
The invention has the outstanding advantages that:
1. By adopting a direct flotation method, sodium sulfide is not used for
vulcanization, and 7-15 kg/t of sodium sulfide can be saved compared with a
vulcanization method.
2. The pH value of the pulp is adjusted to between 8 and 9 by using
sodium carbonate, so that the prepared collector reaches the optimal pH
value, and the collecting effect for the minerals is the best. By adding sodium
silicate and utilizing the diffusion effect on mine mud of sodium silicate,
influences, on lead, of the mine mud in the beneficiation process can be
avoided.
3. Since sodium silicate has an inhibitory effect on gangue minerals, so
that the lead oxide flotation grade can be remarkably improved to be 17.4%.
DESCRIPTION OF THE INVENTION
The technical solution of the invention is further described below by way of
embodiments.
Embodiment 1
The embodiment was an example of a flotation recovery method for
refractory lead oxide minerals, including the following steps of:
(1) 300 g of the lead oxide minerals and 100 ml of water were firstly added
into a ball mill for a laboratory, and then 10 kg/t of sodium carbonate and 4 kg/t
of sodium silicate solid were added into the ball mill and stirring for 3 minutes;
(2) ground minerals in the step (1) were put into a flotation cell, a proper
amount of water was added to dilute the ground minerals into pulp with the
concentration being 38.wt% and the pH being 8 to 9 due to sodium carbonate
was added before, and stirring was performed for 3 minutes;
(3) 100 g/t of uniformly mixed solution with the concentration being 1%
prepared by benzyl-mevalonate and sodium carbonate in a mass ratio of 3: 1
was added and stirring and reacting were performed for 3 minutes;
(4) 300 g/t of uniformly mixed solution with the concentration being 1%
was added, stirring and reacting were performed for 3 minutes, starting
aeration, foam removal and flotation were performed to obtain a lead oxide
product, where the uniformly mixed solution was prepared through a mixed
reagent prepared by carboxymethyl fiber, benzothiazolethiol and sodium
hydroxide in a mass ratio of 1: 1.5: 1 and sodium carbonate in a mass ratio of
3: 1
Embodiment 2
The embodiment was another example of a flotation recovery method for
refractory lead oxide minerals, including the following steps of:
1. Mineral raw materials
Certain lead oxide mineral in Yunnan with ore properties of lead content
being 8.01% and sulfur content beingl.31%, was a typical lead oxide mineral.
The main minerals in minerals were galena, leucite, pyrite, limonite, chlorite,
calcite, quartz and so on.
2. A pharmacy system and operation conditions were as follows: 300g of
minerals were ground until the minerals with particle diameters being 200
meshes accounted for 73%, water was added to adjust the pulp concentration
to 38wt.%, a uniformly mixed solution prepared through a mixed reagent
prepared by 10kg/t of sodium carbonate, 4kg/t of sodium silicate, 300g/t of
carboxymethyl fibers, benzothiazolyl mercaptan and sodium hydroxide in a
mass ratio of 1:1.5:1 and sodium carbonate in a mass ratio of 3:1 was added while the pH value of the pulp was 8-9, and stirring was performed for 3 minutes for rough selection and floatation of lead oxides; a uniformly mixed solution prepared by 200g/t of benzoqiangvalic acid and sodium carbonate in a mass ratio of 3:1, a uniformly mixed solution prepared through a mixed reagent prepared by 100g/t of carboxymethyl fibers, benzothiazolyl mercaptan and sodium hydroxide in a mass ratio of 1:1.5:1 and sodium carbonate in a mass ratio of 3:1 were added into lead oxide flotation tailings, 333g/t of sodium silicate was added, and stirring was performed for 3 minutes for once scavenging and flotation of lead oxide; a uniformly mixed solution prepared by
200g/t of benzoqiangvalic acid and sodium carbonate in a mass ratio of 3:1,
and a uniformly mixed solution prepared through a mixed reagent prepared by
100g/t of carboxymethyl fibers, benzothiazolyl mercaptan and sodium
hydroxide in a mass ratio of 1:1.5:1 and sodium carbonate in a mass ratio of
3:1 were added into the lead oxide flotation tailings again, and stirring was
performed for 3 minutes for twice scavenging and flotation of lead oxides. Lead
oxide concentrate grade was 17.4% through once rough selection and twice
scavenging, and a lead recovery rate was 81.9%.
Embodiment 3
The embodiment was another example of a flotation recovery method for
refractory lead oxide minerals, including the following steps of:
1. Mineral raw materials
Certain lead zinc mineral in Sichuan with ore properties of lead content being
8.92% and sulfur content being 0.63%, was a typical lead oxide mineral. The
main ores in minerals were galena, leucite, sardinianite, pyrite, limonite,
chlorite, calcite, quartz and so on.
2. A pharmacy system and operation conditions were as follows: 300g of
minerals were ground until the minerals with particle diameters being 200
meshes accounted for 78%, water was added to adjust the pulp concentration
to 30wt.%, a uniformly mixed solution prepared through a mixed reagent
prepared by 6kg/t of sodium silicate, 5kg/t of sodium hexametaphosphate,
300g/t of carboxymethyl fibers, benzothiazolyl mercaptan and sodium
hydroxide in a mass ratio of 1:1.5:1 and sodium carbonate in a mass ratio of
3:1 was added while the pH value of the pulp was adjusted to be 8-9 by adding
kg/t of sodium carbonate, and stirring was performed for 5 minutes for rough
selection and floatation of lead oxides; a uniformly mixed solution prepared by
300g/t of benzoqiangvalic acid and sodium carbonate in a mass ratio of 3:1, a
uniformly mixed solution prepared through a mixed reagent prepared by 150g/t
of carboxymethyl fibers, benzothiazolyl mercaptan and sodium hydroxide in a
mass ratio of 1:1.5:1 and sodium carbonate in a mass ratio of 3:1 were added
into lead oxide flotation tailings, 666g/t of sodium silicate was added, and
stirring was performed for 5 minutes for once scavenging and flotation of lead
oxide; a uniformly mixed solution prepared by 300g/t of benzoqiangvalic acid
and sodium carbonate in a mass ratio of 3:1, and a uniformly mixed solution
prepared through a mixed reagent prepared by 150g/t of carboxymethyl fibers,
benzothiazolyl mercaptan and sodium hydroxide in a mass ratio of 1:1.5:1 and
sodium carbonate in a mass ratio of 3:1 were added into the lead oxide
flotation tailings again, and stirring was performed for 5 minutes for twice
scavenging and flotation of lead oxides. Lead oxide concentrate grade was
28.9% through once rough selection and twice scavenging, and a lead
recovery rate was 84.3%.

Claims (3)

1. A flotation recovery method for refractory lead oxide minerals,
comprising the following steps of:
(1) firstly adding 300 g of the lead oxide minerals and 100 ml of water into
a ball mill for a laboratory, and then adding 10 kg/t of sodium carbonate and 4
kg/t of sodium silicate solid into the ball mill and stirring for 3 minutes;
(2) putting the ground minerals in the step (1) into a flotation cell, adding a
proper amount of water to dilute the ground minerals into pulp with the
concentration being 38wt% and the pH being 8 to 9, and stirring for 3 minutes;
(3) adding 100 g/t of uniformly mixed solution with the concentration being
1% prepared by benzyl-mevalonate and sodium carbonate in a mass ratio of 3:
1 and stirring and reacting for 3 minutes;
(4) adding 300 g/t of uniformly mixed solution with the concentration being
1%, stirring and reacting for 3 minutes, and starting aeration, foam removal
and flotation, thereby obtaining a lead oxide product, wherein the uniformly
mixed solution is prepared through a mixed reagent prepared by
carboxymethyl fiber, benzothiazolethiol and sodium hydroxide in a mass ratio
of 1: 1.5: 1 and sodium carbonate in a mass ratio of 3: 1
2. The flotation recovery method for refractory lead oxide minerals
according to claim 1, wherein the mineral raw materials comprise 8.01% of
lead and 1.31% of sulfur, and the main ores in the minerals through phase
analysis are galena, leucite, pyrite, limonite, chlorite, calcite, quartz and so on;
the specific steps and the pharmacy system are as follows:
(1) 300g of minerals are ground until the minerals with particle diameters
being 200 meshes account for 73%, water is added to adjust the pulp concentration to 38wt%, a uniformly mixed solution prepared through a mixed reagent prepared by 10kg/t of sodium carbonate, 4kg/t of sodium silicate,
300g/t of carboxymethyl fibers, benzothiazolyl mercaptan and sodium
hydroxide in a mass ratio of 1:1.5:1 and sodium carbonate in a mass ratio of
3:1 is added while the pH value of the pulp is 8-9, and stirring is performed for
3 minutes for rough selection and flotation of lead oxides;
(2) a uniformly mixed solution prepared by 200g/t of benzoqiangvalic acid
and sodium carbonate in a mass ratio of 3:1, a uniformly mixed solution
prepared through a mixed reagent prepared by 100g/t of carboxymethyl fibers,
benzothiazolyl mercaptan and sodium hydroxide in a mass ratio of 1:1.5:1 and
sodium carbonate in a mass ratio of 3:1 are added into lead oxide flotation
tailings, 333g/t of sodium silicate is added, and stirring is performed for 3
minutes for once scavenging and flotation of lead oxide
(3) a uniformly mixed solution prepared by 200g/t of benzoqiangvalic acid
and sodium carbonate in a mass ratio of 3:1, and a uniformly mixed solution
prepared through a mixed reagent prepared by 100g/t of carboxymethyl fibers,
benzothiazolyl mercaptan and sodium hydroxide in a mass ratio of 1:1.5:1 and
sodium carbonate in a mass ratio of 3:1 are added into the lead oxide flotation
tailings again, and stirring is performed for 3 minutes for twice scavenging and
flotation of lead oxides, wherein the lead oxide concentrate grade is 17.4%
through once rough selection and twice scavenging, and a lead recovery rate
is 81.9%.
AU2021101523A 2021-03-25 2021-03-25 A Flotation Recovery Method for Refractory Lead Oxide Minerals Ceased AU2021101523A4 (en)

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AU2021101523A AU2021101523A4 (en) 2021-03-25 2021-03-25 A Flotation Recovery Method for Refractory Lead Oxide Minerals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2021101523A AU2021101523A4 (en) 2021-03-25 2021-03-25 A Flotation Recovery Method for Refractory Lead Oxide Minerals

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AU2021101523A4 true AU2021101523A4 (en) 2021-05-27

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