CN116060214B - Multi-metal coupling activation flotation method for high-calcium siliceous zinc oxide ore - Google Patents
Multi-metal coupling activation flotation method for high-calcium siliceous zinc oxide ore Download PDFInfo
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- CN116060214B CN116060214B CN202211647947.2A CN202211647947A CN116060214B CN 116060214 B CN116060214 B CN 116060214B CN 202211647947 A CN202211647947 A CN 202211647947A CN 116060214 B CN116060214 B CN 116060214B
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- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/014—Organic compounds containing phosphorus
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- 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
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- 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
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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
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- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/018—Mixtures of inorganic and organic compounds
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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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/007—Modifying reagents for adjusting pH or conductivity
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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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
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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
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
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Abstract
The invention relates to a multi-metal coupling activation flotation method for high-calcium siliceous zinc oxide ore, belonging to the technical field of mineral processing. Aiming at the technical problems that the traditional flotation agent adopted by the high-calcium siliceous zinc oxide ore has poor selectivity, weak collecting capacity, non-ideal sorting index and the like, the invention breaks, grinds and pulp-mixes the high-calcium siliceous zinc oxide ore, then adds a composite regulator to selectively inhibit gangue minerals and surface-modifies the zinc oxide minerals; then adding a coupling activator to deeply activate the modified zinc oxide mineral to enhance the reactivity of the surface of the mineral, adding a composite vulcanizing agent to react with the surface of the mineral after activation to generate a high-activity vulcanized surface, and adding the coupling activator to form a multi-metal sulfide coupling activation interface after vulcanization; and finally, sequentially adding a composite collector and a foaming agent to perform targeted hydrophobic and foam control on the activated zinc oxide minerals in the ore, and performing flotation after size mixing to obtain zinc concentrate and flotation tailings.
Description
Technical Field
The invention relates to a multi-metal coupling activation flotation method for high-calcium siliceous zinc oxide ore, belonging to the technical field of mineral processing.
Background
The zinc oxide ores with rich reserves exist in China, and under the double pressures of resource requirements and environmental threats, the zinc oxide resources with rich reserves are very necessary and significant to be efficiently developed and utilized.
Siliceous zinc oxide ore is an important zinc oxide ore resource, with heteropolar ore being the most typical siliceous zinc oxide ore, which is significantly different in floatability and degree of interaction with flotation agents compared to siderite due to its complex crystal structure and unique surface properties. The flotation practice shows that when siliceous zinc minerals such as heteropolar minerals exist in the zinc oxide ores, the indexes of the zinc oxide concentrate obtained by adopting the traditional flotation reagent and process are poor, which indicates that the recovery of the siliceous zinc minerals cannot be simply applied to the flotation process and reagent system of the easily-selected rhombohedral zinc oxide ores. In addition, when the content of the calcium-containing gangue minerals in the ore is high, the flotation process of the zinc oxide ore is seriously affected, and the flotation index is deteriorated, because the calcium-containing gangue minerals dissolve high-concentration calcium ions in the ore pulp solution and are adsorbed on the surface of the zinc oxide ore, so that the surface of the zinc oxide ore is calcified, the sorting property of the zinc oxide ore and the calcium-containing gangue minerals is reduced, and therefore, an adjusting agent is required to be added before flotation to selectively inhibit the calcium-containing gangue minerals.
However, the existing flotation reagent is mainly used for flotation recovery of the wurtzite type zinc oxide ore, and the synergistic effect of the regulator, the activator, the vulcanizing agent and the collector in the flotation process is poor, so that the flotation index is not ideal. Therefore, development of a flotation reagent system and a process for high-calcium siliceous zinc oxide ore are needed to be developed, the comprehensive utilization rate of zinc ore resources is improved to the greatest extent, and technical support is provided for green low-carbon efficient utilization of complex and difficult-to-process zinc oxide resources.
Disclosure of Invention
Aiming at the technical problems that the traditional flotation agent adopted by the high-calcium siliceous zinc oxide ore has poor selectivity, weak collecting capacity, non-ideal sorting index and the like, the invention provides a multi-metal coupling activation flotation method of the high-calcium siliceous zinc oxide ore, namely, the zinc oxide ore is pretreated by adopting a compound regulator (phytic acid, aminopentanedioic acid and oxalic acid) to improve the selectivity of the action with the agent, then a coupling activator (cupric chloride and lead acetate) is added to deeply activate the modified zinc oxide ore to enhance the reactivity of the surface of the ore, a compound vulcanizing agent (sodium sulfide and sodium hydrosulfide) is added to react with the surface of the ore after activation to generate a high-activity vulcanized surface, and a coupling activator (cupric chloride and lead acetate) is added to form a multi-metal sulfide coupling activation interface after vulcanization; finally, sequentially adding a composite collector (sodium isopentyl xanthate, octanoyl hydroxamic acid and N-dodecyl glycine) and a foaming agent to perform targeted hydrophobic and foam control on the zinc oxide minerals activated in the ores, so that the high-efficiency flotation recovery of the complex refractory zinc oxide ores is realized.
A multi-metal coupling activation flotation method for high-calcium siliceous zinc oxide ore comprises the following specific steps:
(1) Crushing and grinding high-calcium siliceous zinc oxide ore until more than 88% of monomers of the zinc oxide ore are dissociated, and pulping until the mass percentage concentration of ore pulp is 26-33%;
(2) Sequentially adding a composite regulator, a coupling activator I, a composite vulcanizing agent, a coupling activator II, a composite collecting agent and a foaming agent into the ore pulp obtained in the step (1), and performing primary roughing operation to obtain primary roughing concentrate and primary roughing tailings;
(3) Sequentially adding a composite regulator, a coupling activator I, a composite vulcanizing agent, a coupling activator II, a composite collector and a foaming agent into the primary roughing tailings obtained in the step (2), and performing secondary roughing operation to obtain secondary roughing concentrate and secondary roughing tailings;
(4) Adding a composite collector into the secondary roughing concentrate obtained in the step (3), and carrying out primary concentration operation to obtain primary concentrate and primary tailings;
(5) Combining the secondary roughing tailings obtained in the step (3) with the primary concentrating tailings obtained in the step (4), sequentially adding a composite regulator, a coupling activator I, a composite vulcanizing agent, a coupling activator II, a composite collecting agent and a foaming agent, and performing scavenging operation to obtain scavenging concentrate and scavenging tailings, wherein the scavenging concentrate returns to size mixing and is combined with the secondary roughing operation;
(6) Combining the primary roughing concentrate obtained in the step (2) and the primary concentrating concentrate obtained in the step (4), adding a composite collector, and performing secondary concentrating operation to obtain flotation zinc concentrate and secondary concentrating tailings, wherein the secondary concentrating tailings return to pulp mixing and are combined into primary roughing operation;
the composite regulator is a mixture of phytic acid, aminopentanedioic acid and oxalic acid, the coupling activator I and the coupling activator II are both mixtures of cupric chloride and lead acetate, the composite vulcanizing agent is a mixture of sodium sulfide and sodium hydrosulfide, and the composite collecting agent is a mixture of sodium isopentyl xanthate, octanoyl hydroxamic acid and N-dodecyl glycine.
The mass percentage content of zinc in the high-calcium siliceous zinc oxide ore in the step (1) is 5.5-9.0%.
And (3) adding 1000-1400 g of a composite regulator, 300-400 g of a coupling activator I, 6000-8000 g of a composite vulcanizing agent, 500-600 g of a coupling activator II, 600-900 g of a composite collecting agent and 30-60 g of a foaming agent into ore pulp of one roughing operation per ton of high-calcium siliceous zinc oxide ore.
And (3) adding 500-700 g of a composite regulator, 150-200 g of a coupling activator I, 3000-4000 g of a composite vulcanizing agent, 250-300 g of a coupling activator II, 300-450 g of a composite collecting agent and 15-30 g of a foaming agent into ore pulp of the secondary roughing operation in each ton of high-calcium siliceous zinc oxide ore.
150-225 g of composite collector is added into the ore pulp of one-time concentration operation in the step (4) according to each ton of high-calcium siliceous zinc oxide ore.
250-350 g of composite regulator, 75-100 g of coupling activator I, 1500-2000 g of composite vulcanizing agent, 125-150 g of coupling activator II, 150-225 g of composite collector and 8-15 g of foaming agent are added into ore pulp of the scavenging operation in the step (5) by counting per ton of high-calcium siliceous zinc oxide ore.
And (3) adding 75-115 g of composite collector into the ore pulp of the secondary concentration operation in the step (6) according to each ton of high-calcium siliceous zinc oxide ore.
The mass fraction of the composite regulator is 100%, the phytic acid accounts for 20-30%, the aminopentanedioic acid accounts for 25-35%, and the oxalic acid accounts for 40-50%.
The mass fraction of the coupling activator is 100%, the copper chloride accounts for 35-45%, and the lead acetate accounts for 55-65%.
The mass fraction of the composite vulcanizing agent is 100 percent, the sodium sulfide accounts for 40 to 50 percent, and the sodium hydrosulfide accounts for 50 to 60 percent.
Based on the mass fraction of 100% of the composite collector, 50-60% of sodium isopentyl xanthate, 20-30% of octanoyl hydroxamic acid and 15-25% of N-dodecyl glycine.
The foaming agent is terpineol oil.
The beneficial effects of the invention are as follows:
(1) The invention adopts phytic acid, aminopentanedioic acid and oxalic acid as the composite regulator, which not only can selectively inhibit calcium-containing gangue minerals in the ores, but also can eliminate hydrophilic substances on the surfaces of zinc oxide minerals, destroy hydrophilic layers on the surfaces of target minerals, improve the selectivity of flotation agents and facilitate the interaction between the flotation agents and the surfaces of the zinc oxide minerals;
(2) Based on the fact that the reactivity of copper ions and lead ions is superior to the reactivity of intrinsic zinc ions on the surface of zinc oxide minerals, copper chloride and lead acetate are adopted as coupling activators to deeply activate zinc oxide minerals, a high-activity copper-lead coupling activation interface is formed, the reactivity of the surface of the minerals is improved, the intensified vulcanization of the zinc oxide minerals is realized, and the rapid and high-efficiency adsorption of a collector is promoted;
(3) According to the invention, sodium isopentyl xanthate, octanoyl hydroxamic acid and N-dodecyl glycine are adopted as composite collectors, and can be targeted and adsorbed on a zinc oxide mineral interface of multi-metal sulfide coupling activation, so that the adsorption density of the collectors is improved, the hydrophobicity of the surfaces of zinc oxide minerals is enhanced, the dosage of the collectors is reduced, the flotation foam structure and ore carrying capacity are optimized, and the efficient flotation recovery of refractory zinc oxide minerals is promoted.
(4) The invention fully plays the synergistic effect of the compound flotation agent, has simple preparation process and convenient use, simplifies the flotation process structure, reduces the beneficiation cost, obtains satisfactory sorting indexes, economically and efficiently solves the technical problems of poor selectivity, weak collecting capacity, non-ideal sorting indexes and the like of the traditional flotation agent adopted by the high-calcium siliceous zinc oxide ore, and has remarkable social, environmental and economic benefits.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The invention will be described in further detail with reference to specific embodiments, but the scope of the invention is not limited to the description.
In the following examples of the present invention, the composite modifier is a mixture of phytic acid, aminopentanedioic acid and oxalic acid, the coupling activator I and the coupling activator II are both a mixture of copper chloride and lead acetate, the composite vulcanizing agent is a mixture of sodium sulfide and sodium hydrosulfide, the composite collector is a mixture of sodium isopentyl xanthate, octanoyl hydroxamic acid and N-dodecyl glycine, and the foaming agent is terpineol oil.
Example 1: in the embodiment, the mass fraction of the composite regulator is 100%, the phytic acid accounts for 20%, the aminopentanedioic acid accounts for 35% and the oxalic acid accounts for 45%; the mass fraction of the coupling activator is calculated as 100%, copper chloride accounts for 35%, and lead acetate accounts for 65%; the mass fraction of the composite vulcanizing agent is 100%, sodium sulfide accounts for 40%, and sodium hydrosulfide accounts for 60%; based on the mass fraction of 100% of the composite collector, 50% of sodium isopentyl xanthate, 30% of octanoyl hydroxamic acid and 20% of N-dodecyl glycine;
as shown in figure 1, the multi-metal coupling activation flotation method of the high-calcium siliceous zinc oxide ore comprises the following specific steps:
(1) Crushing and grinding high-calcium siliceous zinc oxide ore until more than 88% of monomers of the zinc oxide ore are dissociated, and pulping until the mass percentage concentration of ore pulp is 26%; wherein the mass percentage of zinc in the high-calcium siliceous zinc oxide ore is 5.5 percent;
(2) Sequentially adding a composite regulator, a coupling activator I, a composite vulcanizing agent, a coupling activator II, a composite collecting agent and a foaming agent into the ore pulp obtained in the step (1), and performing primary roughing operation to obtain primary roughing concentrate and primary roughing tailings; 1000g of a composite regulator, 300g of a coupling activator I, 6000g of a composite vulcanizing agent, 500g of a coupling activator II, 600g of a composite collecting agent and 30g of a foaming agent are added into ore pulp of one roughing operation per ton of high-calcium siliceous zinc oxide ore.
(3) Sequentially adding a composite regulator, a coupling activator I, a composite vulcanizing agent, a coupling activator II, a composite collector and a foaming agent into the primary roughing tailings obtained in the step (2), and performing secondary roughing operation to obtain secondary roughing concentrate and secondary roughing tailings; 500g of composite regulator, 150g of coupling activator I, 3000g of composite vulcanizing agent, 250g of coupling activator II, 300g of composite collecting agent and 15g of foaming agent are added into ore pulp of secondary roughing operation according to each ton of high-calcium siliceous zinc oxide ore.
(4) Adding a composite collector into the secondary roughing concentrate obtained in the step (3), and carrying out primary concentration operation to obtain primary concentrate and primary tailings; 150g of composite collector is added into the ore pulp of one fine selection operation per ton of high-calcium siliceous zinc oxide ore.
(5) Combining the secondary roughing tailings obtained in the step (3) with the primary concentrating tailings obtained in the step (4), sequentially adding a composite regulator, a coupling activator I, a composite vulcanizing agent, a coupling activator II, a composite collecting agent and a foaming agent, and performing scavenging operation to obtain scavenging concentrate and scavenging tailings, wherein the scavenging concentrate returns to size mixing and is combined with the secondary roughing operation; 250g of composite regulator, 75g of coupling activator I, 1500g of composite vulcanizing agent, 125g of coupling activator II, 150g of composite collector and 8g of foaming agent are added into ore pulp of scavenging operation according to each ton of high-calcium siliceous zinc oxide ore.
(6) Combining the primary roughing concentrate obtained in the step (2) and the primary concentrating concentrate obtained in the step (4), adding a composite collector, and performing secondary concentrating operation to obtain flotation zinc concentrate and secondary concentrating tailings, wherein the secondary concentrating tailings return to pulp mixing and are combined into primary roughing operation; and 75g of composite collector is added into the ore pulp of the secondary concentration operation according to each ton of high-calcium siliceous zinc oxide ore.
The flotation recovery of zinc in this example was 81.2%.
Example 2: in the embodiment, the mass fraction of the composite regulator is 100%, the phytic acid accounts for 25%, the aminopentanedioic acid accounts for 25% and the oxalic acid accounts for 50%; the mass fraction of the coupling activator is 100%, copper chloride accounts for 40%, and lead acetate accounts for 60%; the mass fraction of the composite vulcanizing agent is 100%, sodium sulfide accounts for 45%, and sodium hydrosulfide accounts for 55%; based on the mass fraction of 100% of the composite collector, 55% of sodium isopentyl xanthate, 20% of octanoyl hydroxamic acid and 25% of N-dodecyl glycine;
as shown in figure 1, the multi-metal coupling activation flotation method of the high-calcium siliceous zinc oxide ore comprises the following specific steps:
(1) Crushing and grinding high-calcium siliceous zinc oxide ore until more than 88% of monomers of the zinc oxide ore are dissociated, and pulping until the mass percentage concentration of ore pulp is 30%; wherein the mass percentage of zinc in the high-calcium siliceous zinc oxide ore is 7.5 percent;
(2) Sequentially adding a composite regulator, a coupling activator I, a composite vulcanizing agent, a coupling activator II, a composite collecting agent and a foaming agent into the ore pulp obtained in the step (1), and performing primary roughing operation to obtain primary roughing concentrate and primary roughing tailings; based on each ton of high-calcium siliceous zinc oxide ore, 1200g of composite regulator, 350g of coupling activator I, 7000g of composite vulcanizing agent, 550g of coupling activator II, 750g of composite collector and 45g of foaming agent are added into ore pulp of one roughing operation.
(3) Sequentially adding a composite regulator, a coupling activator I, a composite vulcanizing agent, a coupling activator II, a composite collector and a foaming agent into the primary roughing tailings obtained in the step (2), and performing secondary roughing operation to obtain secondary roughing concentrate and secondary roughing tailings; 600g of a composite regulator, 175g of a coupling activator I, 3500g of a composite vulcanizing agent, 275g of a coupling activator II, 375g of a composite collecting agent and 23g of a foaming agent are added into the ore pulp of the secondary roughing operation according to each ton of high-calcium siliceous zinc oxide ore.
(4) Adding a composite collector into the secondary roughing concentrate obtained in the step (3), and carrying out primary concentration operation to obtain primary concentrate and primary tailings; 190g of composite collector is added into the ore pulp of one fine selection operation per ton of high-calcium siliceous zinc oxide ore.
(5) Combining the secondary roughing tailings obtained in the step (3) with the primary concentrating tailings obtained in the step (4), sequentially adding a composite regulator, a coupling activator I, a composite vulcanizing agent, a coupling activator II, a composite collecting agent and a foaming agent, and performing scavenging operation to obtain scavenging concentrate and scavenging tailings, wherein the scavenging concentrate returns to size mixing and is combined with the secondary roughing operation; 300g of composite regulator, 90g of coupling activator I, 1750g of composite vulcanizing agent, 140g of coupling activator II, 190g of composite collecting agent and 12g of foaming agent are added into ore pulp of scavenging operation according to each ton of high-calcium siliceous zinc oxide ore.
(6) Combining the primary roughing concentrate obtained in the step (2) and the primary concentrating concentrate obtained in the step (4), adding a composite collector, and performing secondary concentrating operation to obtain flotation zinc concentrate and secondary concentrating tailings, wherein the secondary concentrating tailings return to pulp mixing and are combined into primary roughing operation; and adding 95g of composite collector into the ore pulp of the secondary concentration operation according to each ton of high-calcium siliceous zinc oxide ore.
The flotation recovery of zinc in this example was 82.7%.
Example 3: in the embodiment, the mass fraction of the composite regulator is 100%, the phytic acid accounts for 30%, the aminopentanedioic acid accounts for 30% and the oxalic acid accounts for 40%; the mass fraction of the coupling activator is 100%, copper chloride accounts for 45%, and lead acetate accounts for 55%; the mass fraction of the composite vulcanizing agent is 100 percent, and the sodium sulfide accounts for 50 percent and the sodium hydrosulfide accounts for 50 percent; based on the mass fraction of 100% of the composite collector, the sodium isopentyl xanthate accounts for 60%, octanoyl hydroxamic acid accounts for 25%, and N-dodecyl glycine accounts for 15%;
as shown in figure 1, the multi-metal coupling activation flotation method of the high-calcium siliceous zinc oxide ore comprises the following specific steps:
(1) Crushing and grinding high-calcium siliceous zinc oxide ore until more than 88% of monomers of the zinc oxide ore are dissociated, and pulping until the mass percentage concentration of ore pulp is 33%; wherein the mass percentage of zinc in the high-calcium siliceous zinc oxide ore is 9.0 percent;
(2) Sequentially adding a composite regulator, a coupling activator I, a composite vulcanizing agent, a coupling activator II, a composite collecting agent and a foaming agent into the ore pulp obtained in the step (1), and performing primary roughing operation to obtain primary roughing concentrate and primary roughing tailings; 1400g of composite regulator, 400g of coupling activator I, 8000g of composite vulcanizing agent, 600g of coupling activator II, 900g of composite collecting agent and 60g of foaming agent are added into ore pulp of one roughing operation per ton of high-calcium siliceous zinc oxide ore.
(3) Sequentially adding a composite regulator, a coupling activator I, a composite vulcanizing agent, a coupling activator II, a composite collector and a foaming agent into the primary roughing tailings obtained in the step (2), and performing secondary roughing operation to obtain secondary roughing concentrate and secondary roughing tailings; and (3) adding 700g of a composite regulator, 200g of a coupling activator I, 4000g of a composite vulcanizing agent, 300g of a coupling activator II, 450g of a composite collecting agent and 30g of a foaming agent into ore pulp of the secondary roughing operation according to each ton of high-calcium siliceous zinc oxide ore.
(4) Adding a composite collector into the secondary roughing concentrate obtained in the step (3), and carrying out primary concentration operation to obtain primary concentrate and primary tailings; 225g of composite collector is added into the ore pulp of one fine selection operation per ton of high-calcium siliceous zinc oxide ore.
(5) Combining the secondary roughing tailings obtained in the step (3) with the primary concentrating tailings obtained in the step (4), sequentially adding a composite regulator, a coupling activator I, a composite vulcanizing agent, a coupling activator II, a composite collecting agent and a foaming agent, and performing scavenging operation to obtain scavenging concentrate and scavenging tailings, wherein the scavenging concentrate returns to size mixing and is combined with the secondary roughing operation; based on each ton of high-calcium siliceous zinc oxide ore, 350g of a composite regulator, 100g of a coupling activator I, 2000g of a composite vulcanizing agent, 150g of a coupling activator II, 225g of a composite collecting agent and 15g of a foaming agent are added into ore pulp of scavenging operation.
(6) Combining the primary roughing concentrate obtained in the step (2) and the primary concentrating concentrate obtained in the step (4), adding a composite collector, and performing secondary concentrating operation to obtain flotation zinc concentrate and secondary concentrating tailings, wherein the secondary concentrating tailings return to pulp mixing and are combined into primary roughing operation; and adding 115g of composite collector into the ore pulp of the secondary concentration operation according to each ton of high-calcium siliceous zinc oxide ore.
The flotation recovery of zinc in this example was 84.5%.
While the specific embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes may be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (9)
1. A multi-metal coupling activation flotation method for high-calcium siliceous zinc oxide ore is characterized by comprising the following specific steps:
(1) Crushing and grinding high-calcium siliceous zinc oxide ore until more than 88% of monomers of the zinc oxide ore are dissociated, and pulping until the mass percentage concentration of ore pulp is 26-33%;
(2) Sequentially adding a composite regulator, a coupling activator I, a composite vulcanizing agent, a coupling activator II, a composite collecting agent and a foaming agent into the ore pulp obtained in the step (1), and performing primary roughing operation to obtain primary roughing concentrate and primary roughing tailings;
(3) Sequentially adding a composite regulator, a coupling activator I, a composite vulcanizing agent, a coupling activator II, a composite collector and a foaming agent into the primary roughing tailings obtained in the step (2), and performing secondary roughing operation to obtain secondary roughing concentrate and secondary roughing tailings;
(4) Adding a composite collector into the secondary roughing concentrate obtained in the step (3), and carrying out primary concentration operation to obtain primary concentrate and primary tailings;
(5) Combining the secondary roughing tailings obtained in the step (3) with the primary concentrating tailings obtained in the step (4), sequentially adding a composite regulator, a coupling activator I, a composite vulcanizing agent, a coupling activator II, a composite collecting agent and a foaming agent, and performing scavenging operation to obtain scavenging concentrate and scavenging tailings, wherein the scavenging concentrate returns to size mixing and is combined with the secondary roughing operation;
(6) Combining the primary roughing concentrate obtained in the step (2) and the primary concentrating concentrate obtained in the step (4), adding a composite collector, and performing secondary concentrating operation to obtain flotation zinc concentrate and secondary concentrating tailings, wherein the secondary concentrating tailings return to pulp mixing and are combined into primary roughing operation;
the composite regulator is a mixture of phytic acid, aminopentanedioic acid and oxalic acid, the coupling activator I and the coupling activator II are both mixtures of cupric chloride and lead acetate, the composite vulcanizing agent is a mixture of sodium sulfide and sodium hydrosulfide, and the composite collecting agent is a mixture of sodium isopentyl xanthate, octanoyl hydroxamic acid and N-dodecyl glycine.
2. The multi-metal coupled activated flotation method for high-calcium siliceous zinc oxide ore according to claim 1, wherein the method comprises the following steps: the mass percentage content of zinc in the high-calcium siliceous zinc oxide ore in the step (1) is 5.5-9.0%.
3. The multi-metal coupled activated flotation method for high-calcium siliceous zinc oxide ore according to claim 1, wherein the method comprises the following steps: and (3) adding 1000-1400 g of a composite regulator, 300-400 g of a coupling activator I, 6000-8000 g of a composite vulcanizing agent, 500-600 g of a coupling activator II, 600-900 g of a composite collecting agent and 30-60 g of a foaming agent into ore pulp of one roughing operation per ton of high-calcium siliceous zinc oxide ore.
4. A multi-metal coupled activated flotation process of high calcium siliceous zinc oxide ore according to claim 1 or 3, characterized in that: and (3) adding 500-700 g of a composite regulator, 150-200 g of a coupling activator I, 3000-4000 g of a composite vulcanizing agent, 250-300 g of a coupling activator II, 300-450 g of a composite collecting agent and 15-30 g of a foaming agent into ore pulp of the secondary roughing operation in each ton of high-calcium siliceous zinc oxide ore.
5. The multi-metal coupled activated flotation method for high-calcium siliceous zinc oxide ore according to claim 1, wherein the method comprises the following steps: 150-225 g of composite collector is added into the ore pulp of one-time concentration operation in the step (4) according to each ton of high-calcium siliceous zinc oxide ore.
6. The multi-metal coupled activated flotation method for high-calcium siliceous zinc oxide ore according to claim 1, wherein the method comprises the following steps: 250-350 g of composite regulator, 75-100 g of coupling activator I, 1500-2000 g of composite vulcanizing agent, 125-150 g of coupling activator II, 150-225 g of composite collector and 8-15 g of foaming agent are added into ore pulp of the scavenging operation in the step (5) by counting per ton of high-calcium siliceous zinc oxide ore.
7. The multi-metal coupled activated flotation method for high-calcium siliceous zinc oxide ore according to claim 1, wherein the method comprises the following steps: and (3) adding 75-115 g of composite collector into the ore pulp of the secondary concentration operation in the step (6) according to each ton of high-calcium siliceous zinc oxide ore.
8. The multi-metal coupled activated flotation method for high-calcium siliceous zinc oxide ore according to claim 1, wherein the method comprises the following steps: based on the mass fraction of the composite regulator being 100%, the phytic acid accounts for 20-30%, the aminopentanedioic acid accounts for 25-35%, and the oxalic acid accounts for 40-50%; based on the mass fraction of the coupling activator being 100%, 35-45% of copper chloride and 55-65% of lead acetate; the mass fraction of the composite vulcanizing agent is 100 percent, the sodium sulfide accounts for 40 to 50 percent, and the sodium hydrosulfide accounts for 50 to 60 percent; based on the mass fraction of 100% of the composite collector, 50-60% of sodium isopentyl xanthate, 20-30% of octanoyl hydroxamic acid and 15-25% of N-dodecyl glycine.
9. The multi-metal coupled activated flotation method for high-calcium siliceous zinc oxide ore according to claim 1, wherein the method comprises the following steps: the foaming agent is terpineol oil.
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