40results about How to "Improve flotation environment" patented technology

The invention relates to a method for carrying out flotation on high-silicon high-calcium low-grade magnesite step by step, belonging to the technical field of mineral processing. The method comprises the following steps of: (1) carrying out ball milling on the high-silicon high-calcium low-grade magnesite and adding water to prepare raw ore pulp; (2) placing the raw ore pulp into flotation equipment, adding inhibitor, collecting agent and foaming agent while stirring is carried out, carrying out reverse flotation roughing, and carrying out reverse flotation selection on the obtained raw ore concentrate 0-2 times to obtain desiliconized ore; and (3) adding water into the desiliconized ore to prepare ore pulp, regulating the pH value to be 10-11, adding the inhibitor water glass, the inhibitor sodium hexametaphosphate and the collector to be stirred while stirring is carried out, carrying out direct flotation roughing, and carrying out direct flotation selection on the obtained desiliconized ore concentrate 0-2 times to obtain magnesite ore concentrate. The ore processed by the method provided by the invention has low grade, the obtained magnesite ore concentrate can reach super standard in the metallurgical industry, the flotation effect is good, and the cost is low.

The invention discloses a gangue inhibitor and a beneficiation method of copper sulphide ore containing easily floated gangue minerals, belongs to the technical field of flotation, and solves the problem that gangue minerals have very adverse effects on flotation of copper sulphide ore. The gangue inhibitor comprises sodium polyacrylate, carboxymethyl cellulose, Arabic gum, sodium silicate, sodiumtripolyphosphate, anhydrous sodium sulfite, sodium lignosulfonate and anhydrous zinc sulfate. The method comprises the following steps: adding lime for ore grinding, and adding water for size mixing;sequentially adding a collecting foaming agent, an auxiliary collecting agent and a collecting agent into obtained ore pulp for roughing; adding a collecting agent into obtained roughing tailings, and scavenging for the first time; adding a collecting agent into the scavenging tailings, and carrying out secondary scavenging; sequentially adding pH regulator lime and the gangue inhibitor into an obtained roughing concentrate, and carrying out primary concentration; and adding pH regulator lime into an obtained primary concentration concentrate for secondary concentration. The gangue inhibitoris capable of reducing the floatability of gangue minerals greatly; the method is capable of improving the copper grade and the copper recovery rate of rough concentrate.

The invention discloses a beneficiation method of copper-containing talc-serpentinite ore easy to argillate and float, comprising the following steps of: (1) ore grinding: grinding the copper-containing talc-serpentinite ore easy to argillate and float to obtain raw ore pulp; (2) conducting pre-desliming flotation: specifically, adding a foaming agent into the raw ore pulp, conducting pre-flotation of argillization easy-floating gangue, and therefore obtaining pre-deslimed foam and pre-deslimed ore pulp; (3) carrying out independent flotation of the pre-deslimed foam; and (4) carrying out independent flotation of the pre-deslimed ore pulp. The method has the beneficial effects that firstly, the raw ore pulp is subjected to pre-desliming, so that the flotation environment of the pre-deslimed ore pulp is optimized; the technical scheme that copper floating mud is inhibited firstly, and then the ore pulp is activated and subjected to copper flotation enrichment after reverse flotation ofdeslimed ore pulp is creatively provided, so that the influence of a large amount of mud-containing gangue on copper enrichment in pre-deslimed foam is avoided, and therefore the dosage of chemicals is greatly reduced, and a powerful guarantee is provided for improving the quality of copper concentrate.

The invention discloses a mineral separation method for recovering cassiterite from tin-copper paragenic ore. The method includes the steps of conducting ore grinding on raw ore, conducting flotationon copper sulfur to obtain copper-sulfur bulk concentrates and flotation sulfur tailings, conducting magnetic separation on the flotation sulfur tailings to obtain magnetic separation concentrates andmagnetic separation tailings, conducting flotation on the magnetic separation tailings through a specific agent to obtain tin flotation concentrates and tailings, and conducting centrifugal separation on the tin flotation concentrates to obtain tin concentrates and tin secondary concentrates. According to the method, in the flotation process of cassiterite, through the selective flocculation of fine cassiterite, by means of a specifically-combined inhibitor, the consumption of a collector can be reduced, the cost of the agent is reduced, and meanwhile it is ensured that the recovery grade andrecovery rate of the cassiterite are not reduced, the tin grade is higher than 40% and the total recovery rate is larger than 85%. According to the method, by means of the non-desliming bulk flotation, efficient cassiterite enrichment is realized, and the method is short in technological process, good in technical index and excellent in recycled product structure and has high application value incassiterite recovery.

The invention relates to a beneficiation and metallurgy combined treatment technology for recovering copper of complex copper sulfide ore, and aims to provide a flotation-bioleaching combined treatment technology so as to solve the problems that in the practical production process, the gluey copper sulfide ore is prone to oxidization and degradation in water, sequentially returning foam of middling ore is unstable, and the recovery indexes are low. By the adoption of the technology, the quantity of middling ore slurry can be greatly reduced, the concentration of residual agents can be reduced, the influence of water-soluble metal ions on the flotation main process can be avoided, micro-fine particle secondary copper ore which cannot be recovered from the middling ore through flotation is recovered, the grade of copper concentrate and the comprehensive recovery rate of copper are substantially improved, the grade of metal in tailings is reduced, and the comprehensive utilization rate of resources is improved.

The invention discloses a separation method for cupric oxide and copper sulfide mixed ore. The separation method comprises the following steps: S1, grinding the cupric oxide and copper sulfide mixed ore to below the grade of 0.074mm accounting for 60 to 70 percent of fineness; S2, adding a regulator, a collector and a foaming agent for floating copper sulfide ore into ore pulp obtained from S1; S3, grinding copper sulfide rough concentrate obtained from S2, and carrying out aeration floatation to obtain copper sulfide concentrate; S4, adding a vulcanizing agent, the regulator, the collector and the foaming agent into copper sulfide rougher tailings obtain from S2 and carrying out floatation to obtain cupric oxide rough concentrate; and S5, adding the vulcanizing agent, the regulator, the collector and the foaming agent into the cupric oxide rough concentrate obtained from S4, carrying out floatation to obtain cupric oxide concentrate and cleaner tailings, scavenging the cleaner tailings and outputting the cleaner tailings. By use of the separation method disclosed by the invention, the copper sulfide concentrate and the cupric oxide concentrate with higher grade and higher recoveryrate can be obtained, so that the investment is saved; and the separation method can be applied to industrial production.

The invention belongs to the field of mineral processing, and particularly relates to a beneficiation method for separating copper and cobalt of pyrite copper sulphide cobalt ores including cobalt. The beneficiation method comprises the steps that comminuting, slurry preparation and copper-cobalt bulk flotation are carried out; ore pulp is subjected to one time of roughing and two times of scavenging, and copper-cobalt mixed roughing concentrate, scavenging concentrate and tailings are obtained; the copper-cobalt mixed roughing concentrate is subjected to concentration three times, and copper-cobalt mixed concentrate is obtained; then copper-cobalt separating flotation is carried out; the copper-cobalt mixed concentrate is subjected to one time of copper-cobalt separating roughing and twotimes of copper-cobalt separating scavenging, and copper-cobalt separating roughing concentrate and cobalt concentrate are obtained; and the copper-cobalt separating roughing concentrate is subjectedto one time of copper-cobalt separating concentration, and copper concentrate is obtained. According to the beneficiation method, separation of the copper concentrate and cobalt concentrate is effectively achieved, cost is reduced, and economic benefits are increased; and meanwhile proper copper sulphide concentrate and cobalt sulphide concentrate are provided for the subsequent metallurgy process.

The invention belongs to the technical field of mineral flotation, and particularly relates to a collecting agent for comprehensive recovery of copper-lead-zinc minerals from iron tailings. The collecting agent is a composition ester-215, and the ester-215 is composed of the following raw materials: diethyl dithiocarbamate acrylonitrile ester, n-butyl xanthate propionitrile ester, ammonium dibutyldithiophosphate and terpenic oil. Compared with a conventional collecting agent, the ester-215 is high in collecting capacity and good in selectivity, particularly has a good collecting effect on secondary sulfide and fine-grained copper-lead-zinc minerals with large silt content, has foamability, effectively improves the flotation environment of the copper-lead-zinc minerals in the iron tailings, improves the floatability of the copper-lead-zinc minerals, and can achieve efficient and rapid flotation. Meanwhile, the requirement of the ester-215 for the medium range of ore pulp is wide, the collecting agent can be used within the pH range of 7-13, the effect is good, the collecting capacity for pyrite is weak, and the concentrate grade can be improved.

The invention relates to an efficient purification method for high-silicon high-calcium high-iron low-grade brucite and belongs to the technical field of mineral processing. The method comprises the steps that (1), ore grinding is carried out on the high-silicon high-calcium high-iron low-grade brucite; (2), magnetic separation is carried out on the material after ore grinding, and iron-bearing minerals are removed; (3), water is added to magnetic separation concentrate for pulp conditioning, then an inhibitor, a collector and a foaming agent are added for reverse flotation rough selection, the obtained reverse flotation coarse concentrate is subjected to 1-2 times of reverse flotation selection, and desiliconized concentrate is obtained; and (4), water is added to the desiliconized concentrate for pulp conditioning, the pH value is adjusted, the inhibitor and the collector are added and stirred, direct flotation rough flotation is carried out, the obtained decalcified concentrate is subjected to 1-2 times of positive flotation selection, and brucite concentrate is obtained. The ore processed by the method has high content of calcium, silicon, iron and other gangue minerals, the purified brucite concentrate has high purity and good mineral processing effect, and the method is of great significance in development and efficient utilization of high-silicon high-calcium high-iron low-grade brucite resources in China.

The invention relates to a beneficiation method for pegmatite type lithium polymetallic ore. The beneficiation method comprises the steps of first-stage ore grinding, screening, reselection, magnetic separation, second-stage ore grinding, size mixing, flotation of rubidium-containing mica, flotation of spodumene and the like. The tantalum-niobium concentrate, the tin concentrate, the mica concentrate, the spodumene concentrate and the silica sand mixture are obtained through the gravity-magnetism-flotation combined technology, comprehensive recovery of tantalum, niobium, tin, rubidium, lithium, silicon, aluminum and other elements is sequentially achieved, and the method has the advantages of being simple and convenient in separation technology, good in separation effect, high in resource utilization rate and the like.

The invention relates to a three-product flotation column and method suitable for high-ash fine-fraction coal slime recovery, and belongs to the technical field of coal recovery. The three-product flotation column comprises an inner-layer column body and an outer-layer column body, the top of the inner-layer column body is provided with a clean coal collecting tank a and a feeding pipe, the periphery of the top of the outer-layer column body is provided with a clean coal collecting tank b, the bottom end of a feeding pipe is provided with a stepped jet device, and a flow baffle is arranged under the stepped jet device and in the inner-layer column body; the upper opening of the inner-layer column body is provided with a plurality of upper water spraying devices around the feeding pipe, thebottom of the inner-layer column body is provided with an L-shaped coarse grain recycling channel which is communicated with the outside of the inner-layer column body, and the clean coal collectingtank b and an outer-layer top water spraying device are arranged around the opening of the outer-layer column body; and a foam layer vibrating mechanism is arranged at the position below the clean coal collecting tank b on the same horizontal plane of the inner-layer column body and the outer-layer column body, an inclined flow distribution plate of an annular structure is arranged in the outer-layer column body, and an annular middling coal product collecting tank is reserved between the inclined flow distribution plate and the inner-layer column body. The three-product flotation column is high in recovery capacity, coal quality adaptability and separation precision.

The invention discloses a phosphate ore washing classification and separation method, and belongs to the technical field of mineral processing. The method comprises the steps that slurry and valuableminerals are separated through a plurality of sections of scrubbing operation; slurry is removed through a plurality of sections of desliming operation; after multi-section screening operation, raw ore is separated into minerals of three grades: the high grade, the medium-low grade and barren rock; calcite contained in the minerals of the high grade is removed through an acid leaching method, theminerals of the medium-low grade are subjected to ore grinding flotation operation. According to the method, the ore washing operation and the desliming operation are combined so that phosphorite obtained after monomer separation and slurry can be separated, the grain size of the flotation pulp is controlled within the narrow range, the mineral separation cost is greatly lowered, and the floatation environment is greatly improved. Broken materials are separated into different grain sizes through multi-section screening, some grain sizes of the high level and the grain sizes of the low level are separated independently, then, separated processing is performed, energy consumption of the ore grinding operation is greatly lowered, and the dehydration operation effect is improved.

The invention relates to a high-calcium-magnesium high-argillaceous zinc carbonate flotation recovery method which comprises the following steps: (1) desliming flotation: taking lead-zinc sulfide flotation tailings as raw ores, adding a slime collecting agent, stirring and reacting for 3-6 minutes, and then desliming before zinc oxide flotation to respectively obtain slime-containing ore pulp and deslimed tailing ore pulp; (2) roughing zinc oxide: adding regulators of sodium carbonate, sodium sulfide, gangue inhibitor, lauryl amine acetate and butyl xanthate into the deslimed tailing pulp for roughing zinc to respectively obtain zinc rough concentrate pulp and roughed tailing pulp; (3) zinc oxide concentration: performing concentration operation on the zinc rough concentrate pulp twice to obtain zinc oxide concentrate; and (4) zinc oxide scavenging: performing one-time zinc oxide scavenging operation on the roughing tailing pulp to obtain zinc oxide scavenged tailings. According to the method, the floatability of the zinc oxide mineral can be remarkably enhanced, and better mineral separation technical indexes are obtained.