37results about How to "Increase floatability difference" patented technology

The invention relates to the field of waste plastic sorting, particularly to a method for sorting waste plastics, which combines density sorting and floatation. According to the method, density sorting and floatation are combined, wherein floatation enlarges the floatability differences of plastics with different components, compensates the defects of a method only adopting density sorting, and improves the sorting accuracy and efficiency. The method is simple to operate and high in sorting accuracy and efficiency.

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.

The invention relates to the technical field of recycling waste power lithium-ion batteries, and specifically discloses a method for physically sorting and recovering positive and negative electrode materials of waste ternary lithium batteries. The invention lays the foundation for clean and environmentally friendly physical separation by pyrolyzing the positive and negative electrode materials while removing organic matter, and eliminates the adhesion between the positive electrode material and the graphite by stirring and scrubbing, providing a solid foundation for subsequent flotation and The step-by-step recovery of graphite by magnetic separation creates favorable conditions. The method has the advantages of economy and environmental protection, simple operation and high product purity, realizes efficient separation of positive and negative electrode materials, and improves resource utilization.

The invention discloses a copper-molybdenum mixed concentrate flotation separation agent system and its application; the copper-molybdenum mixed concentrate flotation separation agent system includes a copper mineral inhibitor and a molybdenum mineral collector in the copper-molybdenum flotation separation process and foaming agents. Wherein, the copper mineral inhibitor includes by weight: 3-7 parts of sodium hydroxide, 3-6 parts of hydrogen peroxide, 15-25 parts of sodium thioglycolate, 2 parts of pentasodium diethylenetriaminepentaacetate -5 parts, an appropriate amount of water; the molybdenum mineral collector includes by weight parts: 20-30 parts of kerosene, 5-10 parts of tert-dodecylmercaptan; the foaming agent is 2-hexanol. The inhibitor and collector of the invention have strong selective adsorption capacity, excellent synergistic performance, strong foaming agent group activity, brittle and dense foam formed, and good mineralization effect. The copper-molybdenum flotation separation agent system of the present invention can greatly improve the difference in floatability between molybdenum minerals and copper minerals in complex and difficult-to-separate copper-molybdenum mixed concentrates, effectively reduce the mutual inclusion of copper and molybdenum, and the separation index is excellent. It is harmless and has little impact on the environment.

The invention discloses a method for separating low-sulfur type copper-lead-zinc polymetallic ores by sequential preferential flotation. The technical scheme is carried out in the order of first flotation of copper and then flotation of lead. In the copper priority flotation operation, the combined inhibitor T‑9 is used to realize the combination of valuable elements copper, lead, and Effective separation of zinc; in the lead priority flotation operation, the inhibitor F‑8 is used to effectively inhibit the flotation of zinc minerals. T-9 reduces the planktonic activity of lead and zinc minerals, effectively increases the difference in floatability between copper and lead and zinc minerals, and its components are non-toxic, harmless, green and non-polluting; inhibitor F-8 has a strong effect on sphalerite Good inhibitory effect, while galena and silver minerals have high activity, and galena has a certain collection effect, which is beneficial to reduce the mutual content of lead and zinc in the product. After the method is adopted, the target minerals copper, lead and zinc are effectively separated, and the purpose of comprehensive recovery and utilization of mineral resources is achieved.

The invention discloses a modified pretreatment method for the separation of coal and rock components. The method includes: 1. crushing raw coal until the particle size is not greater than 0.125 mm; 2. crushing zirconia balls with a diameter of 3 mm to 5 mm Put the crushed raw coal in the microwave stirring ball mill; 3. Turn on the stirrer of the microwave stirring ball mill for ball milling. During the ball milling process, add the modifying agent to the ball mill barrel for 1 to 6 times, and carry out microwave radiation; 4. Wait for After the ball milling, the materials in the microwave stirring ball mill are taken out, and the zirconia balls are removed after cooling at room temperature to obtain the modified coal material. The present invention adds modifying agents to the raw coal during the ball milling process and modifies the raw coal in combination with microwave radiation to expand the difference in buoyancy between vitrinite and inertinite in coal rocks, thereby improving the vitrinite and vitrinite components. The flotation separation effect of inert components fundamentally solves the problem of small differences in floatability of microscopic components of coal rocks and poor flotation separation effect.

The invention discloses a method for flotation after acid etching pretreatment of high-calcium fluorite. Acid is added into high-calcium fluorite pulp before flotation, inhibitors are added while the acid is added, and acid etching pretreatment is carried out; pH regulators and collecting agents are sequentially added after pretreatment is completed, and then air agitation pulp mixing is carried out; foam flotation is carried out after pulp mixing is completed, and rough concentrate is obtained; and the rough concentrate is further subjected to concentration to obtain high-quality fluorite concentrate. The method is clean, environmentally friendly, efficient and low in cost, and the obtained fluorite concentrate is high in grade and recovery rate.

The invention relates to the field of mineral processing, and discloses a method for improving the flotation efficiency of ilmenite through microwave treatment. The method comprises the following steps that flotation raw ore is firstly levigated, and then the ore is subjected to subsection microwave pretreatment; and the ore is conveyed into flotation equipment for flotation after being cooled toroom temperature. Due to microwave pretreatment, ferrous ions on the surface of ilmenite can be oxidized into ferric ions, the adsorption function of a collecting agent on the ferric ions is promoted,and the floatability of floatability is improved. Therefore, the recycling rate of ilmenite is increased, the consumption of sulfuric acid and beneficiation reagents in the flotation process is reduced, and the method is beneficial to environmental friendliness.

A primary platinum ore beneficiation method is characterized in that rough platinum family concentrate is obtained after ore grinding and floatation are conducted on primary ore; the rough platinum family concentrate is heated and preprocessed through water glass; size mixing and floatation are conducted on the preprocessed rough concentrate to obtain platinum family concentrate high in platinum family metal grade. Compared with an existing primary platinum ore beneficiation method, the method has the advantages that valuable mineral and gangue mineral are thoroughly separated, and the concentrate grade is high. The method is suitable for primary platinum ore and particularly suitable for low-sulfur, low-platinum and low-palladium primary platinum ore.

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.

The invention relates to a method for flotation separation of copper pyrites and arsenopyrite in copper rough concentrate, and belongs to the technical field of mineral processing. The mass percent concentration and pH of pulp of the copper rough concentrate are regulated, Na2S2O3, NH4Cl and CuSO4 are sequentially added to conduct conventional flotation to obtain a rough concentrate product, and the rough concentrate product is subjected to multiple times of concentration to obtain a final rough concentrate product. The method effectively eliminates the activation effect of copper ions to arsenopyrite, an AsO4NH4Cu-6H2O hydrophilic film generated after reaction prevent xanthic acid from being adsorbed on the surface of arsenopyrite. Meanwhile, a copper sulfide film is generated on the surface of copper pyrites, adsorption of xanthic acid on the surface of the copper pyrites is promoted, the hydrophobicity of the copper pyrites is improved, and thus the floatability difference between the copper pyrites and the arsenopyrite is improved.

The invention discloses a flotation pretreatment method for calcite-containing phosphate rock. In the method, a surface treatment agent and an inhibitor are added to calcite-containing phosphate rock pulp before flotation. The precipitate generated by the reaction between the surface treatment agent and calcite adheres to the surface to change its surface properties, and the inhibitor can be better adsorbed on the surface of calcite. The invention also discloses a flotation method for phosphate rock containing calcite. The method is to add a pH adjuster and a collector to the flotation pretreatment method of the phosphate rock containing calcite and then add a pH adjuster and a collector to stir and adjust the slurry. Carry out froth flotation to obtain rough concentrate, and after the rough concentrate is selected, high-grade phosphorus concentrate is obtained. The method of the invention is used to process phosphate rock with high calcite content, and has simple process, low cost and high recovery rate.

The invention discloses a process for step-by-step production of high-grade molybdenum concentrates and ordinary molybdenum concentrates. The process comprises the following steps that 1, molybdenum crude ore is added with water and ground, and molybdenum ore pulp is obtained; 2, the molybdenum ore pulp is subjected to roughing, molybdenum rough concentrates and molybdenum rough tailings are obtained, the molybdenum rough concentrates or the molybdenum ore pulp is subjected to fast flotation, and fast flotation molybdenum rough concentrates and fast flotation molybdenum tailings are obtained; 3, the fast flotation molybdenum rough concentrates are subjected to two-stage regrinding and selection for five times, and the high-grade molybdenum concentrates where the grade of molybdenum is larger than 57% are obtained; 4, the fast flotation molybdenum tailings obtained through the molybdenum ore pulp are subjected to roughing, and molybdenum rough concentrates and molybdenum rough tailings are obtained; and 5, the fast flotation molybdenum tailings obtained through the molybdenum rough concentrates or the molybdenum rough concentrates in the step 4 are subjected to pre-selection at first and then subjected to two-stage regrinding, selection for eight times and scrubbing for one time, and molybdenum fine tailings and the ordinary molybdenum concentrates where the grade of molybdenum is 52%-55% are obtained. According to the process for step-by-step production of the high-grade molybdenum concentrates and the ordinary molybdenum concentrates, a differential flotation technology is utilized, the molybdenum concentrates of different grades are obtained, the number of selection is shortened, and the total recovery rate of the molybdenum concentrates is increased.