39 results about "Chalcocite" patented technology

The invention discloses a floating method for finely disseminated copper sulfide ores. The floating method specifically comprises steps such as ore grinding, roughing, roughed concentrate re-grinding, roughed concentrate copper-sulfur separating and floating and roughened tailing scavenging, wherein multi-time concentrating and multi-time scavenging are performed on roughened concentrate and roughened tailings, cyclic ore dressing is performed on ores, and different ore dressing reagents are matched, so that the recovery rate of raw ores is increased. The floating method has the advantages that: by optimizing an ore grinding process and reasonably adding a collecting agent and a collecting-foaming agent, surface characteristics of ores are improved, selective adsorption, on copper sulfide ore particle surfaces such as fine-grained copper pyrite and chalcocite, of the collecting agent is strengthened, and hydrophobic agglomeration is formed, so that the recovery rate of copper concentrate is increased by 3-6% in comparison with that of an existing ore dressing method.

The invention relates to a floatation depressant for obtaining molybdenum concentrate and copper concentrate by mineral separation, particularly by separation of copper-molybdenum mixed concentrate, and methods for preparing and using the floatation depressant. The floatation depressant is characterized by being an organic liquid agent obtained through chemical reaction by using mercaptoacetic acid, gallic acid and sodium hydroxide as raw materials. The floatation depressant is the organic liquid agent obtained through the chemical reaction of pyrogallic acid, the mercaptoacetic acid and the sodium hydroxide, and can be used for effectively depressing primary and secondary copper sulfide ores such as copper pyrite and chalcocite, and the copper-molybdenum mixed concentrate can be effectively separated. The defects of large usage of common sodium sulfide, severe operation environment and serious pollution are overcome, and the floatation depressant has the advantages of convenience in addition, safety in use and the like. An effective method which is small in agent usage, convenient to use and low in environmental pollution is provided for the separation of molybdenum copper sulfide mixed concentrate.

The invention relates to a chalcocite-contained coarse-grain disseminated copper sulfide ore step-by-step ore grinding flotation method. According to the chalcocite-contained coarse-grain disseminatedcopper sulfide ore step-by-step ore grinding flotation method, raw ores are subjected to ore grinding and then are graded into two kinds of ore pulp, namely, overflow d and setting sand c to form twoloops to be subjected to flash flotation and conventional flotation correspondingly; during one loop of flash flotation, a high-selectivity collecting agent (2) and a foaming agent (3) are added to the setting sand c ore pulp fed into a single-tank flash flotation machine to be subjected to optimized flotation to obtain a copper concentrate product 1 and flash flotation tailings f; the concentrate grade and the recovery rate of the copper concentrate product 1 can be ensured, ore feeding fluctuation of conventional flotation can be reduced, the stability of the preparation process is improved, and valuable minerals in ores can be recovered as early as possible; during the other loop of conventional flotation, calcium oxide (1), a high-collectivity collecting agent (4) and the foaming agent (3) are added to the overflow d ore pulp to be subjected to stirring and conventional flotation to enable valuable metals such as gold, silver and copper in the overflow d to be enriched into copperconcentrate 2h and remove tailings 1. The chalcocite-contained coarse-grain disseminated copper sulfide ore step-by-step ore grinding flotation method has the advantages of being simple in operation,smooth in process, easy to apply industrially, high in recovery rate, low in production cost, good in comprehensive benefit and the like and is particularly suitable for mineral separation of chalcocite-contained coarse-grain disseminated copper sulfide ores.

The invention discloses a low-alkalinity flotation separation method for pyrite activated by Cu2+ and chalcocite. The method comprises the steps that lime is firstly added in the ore grinding stage so as to keep low alkalinity, a composition of citric acid, sodium sulfite and pyrogallic acid is added as a composite inhibitor in the rougher flotation stage to inhibit the pyrite, copper rougher flotation is achieved under the condition of low alkalinity, then a dispersing agent is added for concentration, inhibition on gangue minerals is intensified, and copper concentrates are obtained. Compared with the traditional manner of inhibiting sulfur through lime, the inhibition effect of the composite inhibitor on the pyrite activated by Cu2+ is remarkable, wherein citric acid is used for removing the activation action of Cu2+ on the pyrite, so that natural floatability of the pyrite is restored, the inhibition effect on the pyrite is intensified through sodium sulfite and pyrogallic acid, meanwhile, the phenomenon of trough moving caused by foam viscosity is eliminated, and the index of the mineral processing technology is improved; and in addition, due to the fact that the flotation pH value is lowered, recycling of associated gold in ore is facilitated.

The invention discloses application of L-cysteine and L-cysteine salt in metal sulfide mineral flotation separation. L-cysteine and/or L-cysteine salt are/is used as non-molybdenum sulphide mineral inhibitors to be applied to flotation separation of sulphur molybdenum and non-molybdenum sulfide mineral; and the molecular structure of L-cysteine simultaneously contains three kinds of functional groups comprising sulfydryl, amidogen and carboxyl, wherein sulfydryl and amidogen are solid-philic groups and can be combined with metal ions to generate stable pentacyclic chelate, and carboxyl is a hydrophilic group mainly. The L-cysteine is mainly used as a non-molybdenum sulfide mineral surface modification activator, can enhance the hydrophilia of the surface of the sulfide mineral with the natural hydrophobicity, particularly can effectively enhance the hydrophilia of the surface of the non-molybdenum sulphide mineral such as copper pyrites, chalcocite, galena, blende, iron pyrite and bismuth sulfide ore, restrains upward flotation of the non-molybdenum sulphide mineral, and achieves efficient flotation separation of the sulphur molybdenum and the non-molybdenum sulfide mineral.

The invention provides a method for selecting copper concentrate from copper ore with the high sulfur and arsenic content. The method includes the steps that firstly, pyrites are restrained, and differential flotation is conducted on the copper ore step by step; secondly, enargite is selectively removed from the copper concentrate. A regrinding reagent removing-oxidizing method is adopted in the process of removing the enargite from the copper concentrate, lime and calcium hypochlorite are used for size mixing, and the copper ore such as chalcocite, blue chalcocite and covellite which do not contain arsenic are preferentially oxidized under the strong oxidizing property of potassium permanganate, hydrophilic oxide films are formed on the surfaces of the ore such as the chalcocite, the blue chalcocite and the covellite so thatrestraining can be achieved, floatation separation with the sulfur and arsenic copper ore can be achieved, the product scheme of the copper concentrate is optimized, and copper concentrate marketing, smelting and recycling can be easily promoted.

The invention provides a hydrazine derivative, and a preparation method and application of the hydrazine derivative. .The hydrazine derivative structurally contains sulphide ore surface solid-tropy groups of hydrazine, dithioacid and the like, and hydrophilic groups of carboxyl, sulfonic group, hydroxyl, amidogenand the like. According to the preparation method, the hydrazine and carbon disulfide take a reaction under the alkaline condition to obtain 1-diazanyl-dithio formate; the 1-diazanyl-dithio formate takes a reaction with one-molecule or two-molecule halogenated carboxylate to obtain the hydrazine derivative; the hydrazine derivative is used as the sulphide ore modified surfactant. The hydrophilicity of the sulphide ore with the natural hydrophobicity can be enhanced; particularly, the hydrophilicity of non-molybdenum sulphide ore such as chalcopyrite, chalcocite, galena, blende, troilite and bismuth sulphide ore can be effectively enhanced.

The present invention relates to a process for improving the recovery of valuable sulphide minerals. The process involves determining an Eh range within which the valuable sulphide mineral may be recovered by flotation without the need of a collector. The slurry is then subjected to flotation in a pneumatic cell (50) at such a speed that the slurry remains within the Eh range during flotation. The process substantially reduces or totally eliminates the need for collector. For mixed ores such as chalcopyrite/chalcocite chalcopyrite is recovered without collector, while some non xanthate collector may be required to recover chalcocite.

The invention discloses a corrosion-resistant cement clinker warehouse top conveyor. A processing method for steel in the corrosion-resistant cement clinker warehouse top conveyor comprises the steps that (1) high-manganese steel, zinc oxide, chromic oxide, nickel sulfate, graphite, asbestos, chalcocite, stibnite and cassiterite are molten at the temperature of 1390-1450 DEG C so as to obtain molten mixture; and (2) silicon carbide, magnesium borate whiskers, graphene and the molten mixture are reheated at the temperature of 1550-1620 DEG C, and then water quenching is conducted at the temperature of 1240-1310 DEG C so as to obtain the steel in the corrosion-resistant cement clinker warehouse top conveyor. The corrosion-resistant cement clinker warehouse top conveyor has excellent mechanical strength and corrosion resistance.

The invention discloses an automobile front top lamp support being high in outer-wall hardness and tensile strength. The automobile front top lamp support is characterized by comprising the following components in parts by weight: 500-550 parts of limonite, 30-40 parts of maghemite I, 400-480 parts of pyrite, 10-20 parts of cinnabar, 8-9 parts of malachite, 10-14 parts of maghemite II, 5-6 parts of sphalerite, 3-4 parts of azurite, 6-7 parts of chalcocite, 2-3 parts of cassiterite, 3-4 parts of tantalite-columbite, 1-2 parts of jamesonite, 2-3 parts of scheelite, 8-9 parts of ilmenite, 3-4 parts of tantalum rutile, 20-30 parts of niccolite and 200-260 parts of a nickel ore biological metallurgy catalyst. According to the automobile front top lamp support disclosed by the invention, the biological metallurgy technology is adopted and the nickel utilization ratio is improved; meanwhile, the mechanical properties of parts are improved by adopting a multi-channel machining process; and the machined automobile front top lamp support is high in outer-wall hardness and the tensile strength.

The invention discloses a rear door left hinge reinforcing plate with a good-corrosion-resistance easy-to-weld welding zone. The rear door left hinge reinforcing plate is characterized by comprising the following components in parts by weight: 500-550 parts of siderite, 400-480 parts of alferric minerals, 10-20 parts of chalcocite, 8-9 parts of malachite, 10-14 parts of maghemite, 5-6 parts of sphalerite, 2-3 parts of cassiterite, 1-2 parts of jamesonite, 2-3 parts of scheelite, 5-6 parts of bonamite, 3-4 parts of tantalorutile, 2-3 parts of ilmenite, 20-30 parts of pentlandite and 200-260 parts of a nickel ore biological metallurgical catalyst. The rear door left hinge reinforcing plate is good in wear resistance and is resistant to corrosion; and the easy-to-weld welding zone is good in corrosion resistance.

The invention belongs to the field of nonferrous metal smelting, and particularly relates to a short-process high-recycling-rate smelting method for chalcocite. The short-process high-recycling-rate smelting method comprises the following steps that chalcocite and copper sulfonium are fed into a converting furnace with the oxygen concentration capable of being adjusted within a certain range to beconverted; crude copper generated by converting is sent to an anode furnace for fire refining, and converting slag generated by converting serves as a return material to be mixed into a smelting furnace to generate copper matte and smelting slag; the smelting slag is sent to a beneficiation workshop to be subjected to grinding and floating, and slag concentrate with high copper content and tailings with low copper content are selected; and the slag concentrate serving as a raw material is added into the smelting furnace to recycle copper metal, and the tailings serve as a raw material of a cement plant for recycling. The method is short in process and free of a smelting process, and the processing cost is reduced; and due to the fact that addition of a slag former is reduced and no high-sulfur and high-iron materials exist, the converting slag type is FeO-SiO2 after converting is finished, good fluidity is achieved, the yield of the converting slag is greatly reduced, and the copper recycling rate is increased and can reach 99% or above.

The invention discloses an oil filler lining plate being lower in surface roughness, smaller in machining allowance and higher in strength. The oil filler lining plate is characterized by comprising the following components in parts by weight: 500-550 parts of limonite, 50-70 parts of siderite, 400-480 parts of pyrite, 10-20 parts of chalcopyrite, 5-6 parts of hydromica, 8-9 parts of malachite, 10-14 parts of maghemite, 5-6 parts of sphalerite, 2-3 parts of cassiterite, 1-2 parts of jamesonite, 5-6 parts of chalcocite, 6-7 parts of ilmenite, 2-3 parts of wolframite, 3-4 parts of tantalorutile, 20-30 parts of copper-nickel sulfide ore and 200-260 parts of a nickel ore biological metallurgy catalyst. According to the oil filler lining plate disclosed by the invention, the nickel utilization ratio is improved by adopting the biological metallurgy technology, and the mechanical properties of parts are improved by adopting a plurality of machining processes.

The invention discloses a potassium titanate-hepta-copper tetrasulfide composite material which is formed by loading orthorhombic blue chalcocite type hepta-copper tetrasulfide nanoparticles with the particle size of 10-30 nm on the surface of a potassium titanate nanowire. The preparation method comprises the following steps: adding a certain amount of titanium dioxide and a potassium hydroxide solution into water, uniformly mixing, carrying out a hydrothermal reaction, and carrying out centrifugal washing and drying after the hydrothermal reaction is ended, so as to obtain the potassium titanate nanowire; adding the obtained potassium titanate nanowire and a certain amount of cadmium acetate dihydrate into ethanol, adding thioacetamide under the condition of heating and stirring to react for a period of time, then adding cuprous chloride to react, and then carrying out centrifugal washing and drying to obtain a potassium titanate-hepta-copper tetrasulfide composite material. According to the invention, small-sized copper tetrasulfide particles are distributed on the potassium titanate nanowire, the load of the copper tetrasulfide is beneficial to effective separation of photo-induced electrons and holes, and the reduction performance of the photo-induced electrons is fully exerted to realize effective photo-reduction of carbon dioxide to generate methane and carbon monoxide.

The invention discloses an automobile transmission shaft for reducing structural stress and preventing inner cracks from being generated. The automobile transmission shaft is characterized by comprising, by weight, 500 to 550 parts of limonite, 10 to 25 parts of aluminum-iron ores, 300 to 310 parts of magnetite, 10 to 12 parts of chromite, 6 to 8 parts of asbestos ores, 8 to 9 parts of chalcocite, 5 to 7 parts of malachite, 8 to 10 parts of cinnabar, 1 to 2 parts of smithsonite, 7 to 8 parts of ilmenite, 30 to 40 parts of diaspore, 4 to 5 parts of columbite-tantalite, 3 to 4 parts of cerussite, 4 to 5 parts of galena, 3 to 4 parts of nontronite, 2 to 3 parts of wolframite and 10 to 11 parts of violarite. The ores are pretreated through a nickel metal independent refining and pressure leaching technology, the refining efficiency of trace metals in the low-grade ores is improved, the purity of the trace metals in an alloy material is improved, the structural stress is reduced, and the inner cracks are prevented from being generated.

The invention discloses an automotive rear axle driving bevel gear capable of preventing side edge longitudinal cracking and a manufacture method thereof. The automotive rear axle driving bevel gear is characterized by comprising the following components in parts by weight: 500-550 parts of hematite, 300-310 parts of magnetite, 10-12 parts of chromite, 8-9 parts of chalcocite, 1-2 parts of blende, 7-8 parts of ilmenite, 5-7 parts of wolframite, 30-40 parts of bauxite, 4-5 parts of stannite, 3-4 parts of columbite-tantalite, 2-3 parts of hydromica and 10-11 parts of pentlandite. Chlorination segregation and a pressure leaching technique are adopted for pretreating ores; the refining efficiency of trace metal in low-grade ores is improved; the purity of trace alloys in alloy materials is improved; and quality of part materials is improved.

The invention belongs to the technical field of biological metallurgy, and particularly relates to a method for strengthening copper blue bioleaching by comprehensively utilizing ferric ions and ferrous ions. The method can be used for improving the ore leaching efficiency of low-grade copper sulfide ore. The method specifically comprises the steps that ferric sulfate and sulfur-containing oxidizing bacteria are adopted as a leaching agent for leaching copper blue; and then iron-oxidizing bacteria are added into a leaching system for achieving leaching. According to the method, efficient utilization of an iron source and bacteria is achieved, and the situation that due to addition of exogenous iron, passivated objects such as compact jarosite on the surface of the ore are generated too early, and the reaction rate is limited by a sulfur layer formed on the surface in the reaction process is avoided. The method has important significance in improving the bioleaching efficiency of chalcocite.

The invention relates to a preparation method of a heat-conductive and flame-retardant material for lithium batteries. The method includes the following steps that 1, granite, magnetite, barium sulfate, coke, chalcocite powder, aluminum hydroxide, montmorillonite, titanium oxide, gypsum, potassium titanate and silver are ground into powder to form mixture filler, the mixture filler is hated to 880 DEG C at a uniform speed at the normal temperature and sintered for 4-8 h at the constant temperature, and the temperature is lowered to the normal temperature for cooling; 2, aluminum oxide, zircon sand and eucryptite are heated to 820 DEG C at a uniform speed and sintered for 4-6 h at the constant temperature to serve as ceramic filler; 3, the ground mixture filler and the ground ceramic filler are mixed evenly, the temperature is raised to 1160 DEG C for sintering, filler is obtained, and then the filler is ground to be 100-400 micrometers; 4, the filler is cooled, epoxy resin is added, and after even mixing, the heat-conductive and flame-retardant material for lithium batteries is obtained. The raw material cost is low, the proportion and compatibility are scientific and reasonable, the preparation method is fast to implement, and the working temperature of battery packs can be lowered by 10-20 DEG C with the obtained flame-retardant material.

The invention relates to a method for intensively extracting copper in high-grade chalcocite, and belongs to the field of wet nonferrous metallurgy. According to the method, the high-grade chalcocite ore is crushed and heaped, after heaped, high-acid and high-iron bacterium-containing raffinate is adopted for cyclic leaching operation, leachate is sampled at regular intervals to analyze the copper concentration, when the copper concentration of the leachate is larger than 3.5 g/l, the leachate is extracted, and the extracted raffinate returns to continue to be leached. According to the method, a high-acid and high-iron leaching system is formed in a high-grade chalcocite dump leaching system in a manner of combining biological dump leaching circulating leaching and extraction acid returning, and rapid leaching of the chalcocite is enhanced and promoted, so that the leaching period is shortened, massive leaching of copper metal is realized, and the utilization rate of copper resources is increased.

The invention discloses full-glaze cinnabar red porcelain and a preparation process thereof. The cinnabar red porcelain comprises a green body and cinnabar red glaze coated on the green body, the cinnabar red glaze is prepared from the following raw materials: Dehua quartz, kaolin, chalcocite, hematite, lanthanum oxide, calcium oxide, sphalerite, magnesium oxide and frit; the surface of the porcelain prepared by the invention is a smooth vermilion glaze surface, and the porcelain is high in smoothness, good in glossiness and uniform in color distribution, so that the aesthetic property of the porcelain is greatly improved, and the market demand of people on red glazed porcelain can be met; wherein in the glaze composition, chalcocite, hematite, lanthanum oxide and calcium oxide are matched with one another to serve as a color developing agent, sphalerite and magnesium oxide are matched with the color developing agent, and meanwhile, a specific firing process is limited, so that the chromaticity, uniformity and integrity of the glaze surface of the prepared porcelain are guaranteed.

The invention relates to a hydrocarbon-rich reductive ore-forming fluid determination method. The hydrocarbon-rich reductive ore-forming fluid determination method specifically comprises the followingsteps of (1) determining a main hydrocarbon source rock series according to petrography characteristics of sedimentary rock; (2) determining matter sources of hydrocarbon-rich reductive ore-forming fluid and a hydrocarbon source rock area by determining total organic carbon; and (3) massively reducing oxidized copper formed by an initial concentration effect in copper-containing amaranthine anagenite by using hydrocarbon-rich reductive ore-forming fluid as an important reduction agent to form chalcocite precipitates. The hydrocarbon-rich reductive ore-forming fluid determination method has the following advantages that the identification and delineation of the hydrocarbon-rich reductive ore-forming fluid can be solved, the gathering and positioning capacity of sedimentary ore-forming sandy conglomerate copper-lead-zinc mineral deposits can be effectively improved, and the characteristics of high recognition degree, rapidness and effectiveness can be realized.