35 results about "Skarn" patented technology

The invention relates to a beneficiation method for separating molybdenum-tungsten oxide ore and molybdenum sulfide ore from molybdenum tungsten ore. The beneficiation method comprises the steps that magnetic separation is conducted on raw separation molybdenum sulfide ore at least twice, so that the raw separation molybdenum sulfide ore subjected to magnetic separation is divided into magnetic ore containing molybdenum-tungsten oxide and non-magnetic ore containing molybdenum sulfide; and a molybdenum-tungsten oxide flotation process is conducted on the magnetic ore, and a molybdenum sulfide flotation process is conducted on the non-magnetic ore, so that molybdenum-tungsten oxide concentrate and molybdenum sulfide concentrate are obtained. According to the beneficiation method for separating the molybdenum-tungsten oxide ore and the molybdenum sulfide ore from the molybdenum tungsten ore, the magnetic ore containing molybdenum-tungsten oxide and the non-magnetic ore containing molybdenum sulfide are separated out before ore grinding by means of the magnetic characteristic of iron-bearing ore in skarn in a magnetic separation and flotation combined way, so that the floatability of the ore is improved, the beneficiation feed grades of the molybdenum sulfide ore and the and molybdenum-tungsten oxide ore subjected to flotation are increased, and a subsequent flotation technological process is simplified; and in addition, grading index fluctuation caused by the change of the characteristics of the ore is reduced, and the mine production cost can be reduced easily.

The invention discloses a comprehensive prospecting method for multi-metal minerals, and provides a prospecting method integrated with a mineralization system, water system sediment measurement, rockdebris measurement, large-scale geophysical and chemical prospecting profile/high-precision magnetic survey and engineering verification, and a huge prospecting breakthrough is obtained in the prospecting process. Through the implementation of the combination method, the limitation of shallow coverage conditions on conventional geological mapping can be effectively avoided, a prospecting target area can be rapidly shrunk in a quaternary coverage area, and spatial positioning of a mineralization alteration zone and an ore-bearing geologic body is achieved, so that the prospecting success rate is increased accordingly, and the method has the advantages of being short in prospecting period, high in efficiency and low in prospecting cost and is suitable for prospecting of shallow vein-shaped copper-lead-zinc-silver-gold ores and skarn-type iron-copper ores; and the wide-area electromagnetic method has the absolute advantage of large detection depth, and is suitable for exploration of deepconcealed porphyry type copper-molybdenum ores by combining an ore prospecting prediction geological model established according to geological characteristics and a speculated concealed ore-bearing porphyry body range.

The invention belongs to the technical field of mineral machining, and particularly relates to a sorting method of a skarn type low-grade copper zinc ore. The sorting method comprises the steps of carrying out first ore grinding on raw ore to obtain flotation roughing raw ore; carrying out mixed flotation on the flotation roughing raw ore to obtain copper-zinc-sulfur mixed concentrate; carrying out second ore grinding on the copper-zinc-sulfur mixed concentrate to obtain copper-zinc-sulfur mixed ore pulp; separating the copper zinc mixture and sulfur from the copper-zinc-sulfur mixed ore pulpto obtain copper-zinc mixed concentrate and sulfur crude ore; and carrying out floatation on the sulfur crude ore to obtain sulfur concentrate. According to the sorting method of the skarn type low-grade copper zinc ore, the copper grade of the obtained copper-zinc mixed concentrate is 14.88%, the copper recovery rate is 75.37%, the zinc contained is 9.96%, and the zinc recovery rate is 66.58%; the sulfur grade of the obtained sulfur concentrate is 30.56%, and the sulfur recovery rate is 31.43%; the comprehensive utilization rate of the low-grade copper-zinc ore can be effectively improved; and the use amount of reagent is remarkably reduced, and the pollution degree to the environment can be reduced.

The invention discloses a skarn type tungsten ore beneficiation method. Tungsten concentrates are finally obtained through the steps of raw ore levigation, quick floatation of coarse particles, middling regrinding, quick scheelite flotation, medium grain floatation, fine grinding, fine grain floatation, centrifugal reselection of middlings and the like. Separation indexes of separated skarn type tungsten ore are good, and the grade and recovery rate of the tungsten concentrates are high. The skarn type tungsten ore beneficiation method is stable, efficient, good in separation effect, high in adaptability, high in recovery index, capable of achieving low production cost and suitable for application and popularization.

The invention discloses a skarn copper mine beneficiation method. Firstly, raw skarn copper mine is subject to wet type ore grinding, a pH regulator is added during ore grinding, and the pH of ore pulp is adjusted to be 9 to 10; a copper selectivity collector and a foaming agent are sequentially added into ore pulp treated in the step (1), copper roughing is carried out 1 time to 3 times, copper scavenging is carried out 1 time to 3 times, and first-time copper rough concentrate and first-time tailings are obtained; a sulfur-containing mineral inhibitor and a copper selectivity collector are sequentially added into the first-time copper rough concentrate obtained by treatment in the step (2), fine selection is carried out 2 times to 3 times, refined scavenging is carried out 2 times to 3 times, and second-time copper rough concentrate and second-time tailings are obtained; a floatable gangue mineral inhibitor and a copper strong collector are added into the second-time copper rough concentrate obtained through treatment in the step (3), fine selection is carried out 2 times to 3 times, refined scavenging is carried out 2 times to 3 times, and final copper concentrate and third-time tailings are obtained. By means of the method, the using amount of the inhibitors can be effectively reduced, and the copper recovery rate is improved.

The invention discloses a combined regulator for the flotation of magnesian skarn type copper sulfide ore and an application method thereof, and belongs to the technical field of mineral processing engineering. The combined regulator is combined by adopting three agents of caustic soda, sodium sulfide and sodium silicate; the mixing proportion of the three agents is that the ratio of the caustic soda to the sodium sulfide to the sodium silicate is equal to (20 to 40) to (0.5 to 2) to (1 to 5). In comparison with a conventional regulator lime for copper sulfide ore, the three agents are used for synergetic action; the exertion of the performance of an inhibitor and the performance of a collector is more facilitated; the indices of the mineral dressing of copper are greatly improved; the combined regulator has market application value.

The invention relates to a method for improving the molybdenum concentrate recovery rate during copper-molybdenum separation of low-grade high-argillization skarn ore, and belongs to methods for separating molybdenum concentrate from copper-molybdenum ore of the skarn ore during copper-molybdenum separation. The method comprises the steps of beforehand tailing discarding operation of mixed concentrate, rough selection operation of copper-molybdenum separation, rough concentrate re-grinding operation, and molybdenum fine selection operation after re-grinding operation of molybdenum rough concentrate. According to the method for improving the molybdenum concentrate recovery rate during copper-molybdenum separation of the low-grade high-argillization skarn ore, the copper-molybdenum separation operation process is smooth, the molybdenum recovery rate is improved, and the problem that the molybdenum recovery rate is low after the molybdenum concentrate is subjected to repeated fine selection during molybdenum concentrate separation of copper-molybdenum separation of the copper-molybdenum mixed concentrate is solved; and the mixed concentrate is subjected to beforehand tailing discarding operation, and copper concentrate is returned to the beforehand tailing discarding operation again, so that the recovery rate of the molybdenum concentrate is greatly improved.

The invention discloses a core sand for automobile engine casting and a preparation method of the core sand. The core sand is prepared from the following raw materials in parts by weight: 170-180 parts of forsterite sand, 40-55 parts of graphite sand, 35-40 parts of high-magnesium phosphate tailing slag, 40-60 parts of skarn, 25-30 parts of waste foam concrete, 40-50 parts of knar clay, 15-18 parts of coal powder, 16-20 parts of coconut coir, 14-16 parts of blast furnace gas ash, 8-12 parts of high-aluminum fine powder, 10-15 parts of calcium zirconate, 15-17 parts of hollow silica nanospheres, 2-3 parts of sodium silicate, 3-5 parts of aluminum silicate, 3-4 parts of ammonium alginate, 4-6 parts of hydroxyethyl cellulose, 4-7 parts of beta-cyclodextrin and a proper amount of water. The core sand disclosed by the invention is good in performance; in the casting process, the amount of gas evolution is small, the drying time is short, the gas permeability is good, and the wet tensile strength is high; meanwhile, the demolding property of a sand mold can be improved, the sensibility to water during pouring can be lowered, and gas holes in a casting can be prevented; and bentonite and sodium water glass are adopted as binders, so that the mold drawing strength and the collapsibility of the core sand can be improved.

The invention provides a method based on the cathode luminescence feature of scheelite in a skarn deposit and used for distinguishing the redox properties of an ore-forming fluid. The method includes:acquiring a plurality of scheelite samples; selecting scheelite particles on the basis of the mineralogy, morphology and production features of the scheelite particles in the scheelite samples to obtain high-quality scheelite particles; acquiring the scanning electron microscope-cathode luminescence image and back scattering image of the high-quality scheelite particles; based on the scanning electron microscope-cathode luminescence image and the back scattering image, dividing the high-quality scheelite particles according to the morphology and internal structural features of the scheelite particles to obtain a plurality types of high-quality scheelite particles; performing in-situ analysis on rare-earth elements in the plurality types of high-quality scheelite particles to obtain europium content and molybdenum content data; calculating europium anomaly according to the europium content data, and building an element distribution diagram according to the europium anomaly and the molybdenum content data, wherein the element distribution diagram is used for indicating the redox properties of the ore-forming fluid of the scheelite.

The invention discloses a method for exploring overlay area skarn type iron-copper-gold deposit. According to the method, through steps of analyzing a metallogenetic geological condition and compiling an exploration area metallogenetic structural map; screening an ore finding target area; performing CSAMT method section measurement, determining positions of mineralized marble xenoliths and performing drilling verification, positioning of the mineralized marble xenoliths is realized, thereby realizing a purpose of searching the overlay area skarn type iron-copper-gold deposit. Compared with the prior art, the method is advantageous in that a technical solution of searching the marble xenoliths by means of a CSAMT method is presented according to a resistivity high-low-high difference among marble, ore (mineralized rock) and rock body; and the method is an effective method for deposit exploring in an overlay area.

The invention relates to a method for preparing steaming pressure aeroconcrete by skarn type mine tailings, which belongs to the field of ore mine environment protection and the field of building materials and comprises following ingredients in percentage by weight: 25 to 45 percent of skarn type mine tailings, 25 to 35 percent of water quenching blast furnace slag, 15 to 30 percent of silica sand, 6 to 12 percent of cement clinker, 3 to 6 percent of natural gypsum, water reducing agents accounting for 0.6 to 0.9 percent of the total mass of the mixed dry materials, 0.06 to 0.12 percent of aluminum powder and 35 to 45 percent of warm water at the temperature between 48 and 55 DEG C. The aeroconcrete prepared by the invention has the moisture pressure-resistance intensity higher than 3.5 MPa, the absolute dry pressure-resistance intensity higher than 5 MPa and the dry body density between 550 kg/m<3> and 650 kg/m<3>, the requirement of the national standard on the performance indexes of the steaming pressure aeroconcrete can be met, and the invention provides a novel utilization path for the skarn type mine tailing resources with difficult utilization, and is favorable for solving the problems of ground resource occupation and environment pollution of the piling storage of the skarn type mine tailings.

The invention relates to a separation technology of ground surface skarn type hematite. The technology is characterized by comprising coarse breaking work, ore washing desliming and dry and wet separation work, medium breaking work, wet type screening work and continuous two-segment water removal and grading work. According to the technology, grade of raw ore with 53 to 55% iron grade can be improved to 58% successfully without grinding and separation, the comprehensive concentrate recycling rate can reach 73 to 77%, the comprehensive iron recovery rate is much higher than the 70% recovery rate of traditional hematite mineral separation, the good mineral separation index is obtained, and in order to obtain the higher earnings, the guarantee is provided. The raw ore is subject to effectivedesliming, the slurry blockage problem can be solved, and two kinds of produced raw materials of smelting and sintering ores can be directly transported outwards.

The invention relates to a beneficiation method for recovering tin and silver from skarn type low-grade tin tailings. The beneficiation method comprises the following steps that: S1, ore samples are subjected to gravity separation and tailing discarding, the centrifugal gravity separation concentrates are subjected to primary flotation roughing, primary scavenging and primary blank concentration,and silver concentrates and flotation tailings are obtained; S2, the magnetic separation flotation tailings are subjected to centrifugal gravity separation, and magnetic separation concentrates and magnetic separation tailings are obtained; grading the magnetic separation tailings into a +A size fraction and a -A size fraction; S3, +A size fraction gravity separation is conducted, and cassiteritetable concentrates and the like are obtained; S4, cassiterite shaking table concentrate is collected for size mixing and the like to serve as carrier minerals; S5, size mixing is conducted on the sizefraction A, and a micro-fine particle cassiterite ore sample is obtained; S6, carrier minerals are added into the micro-fine particle cassiterite ore sample, a collecting agent and the like are added, and ore pulp is obtained; and S7, the ore pulp obtained in the S6 is subjected to flotation, and flotation concentrate and flotation tailings are obtained. The beneficiation method provided by the invention is simple in technological process, low in production cost, low in flotation reagent dosage, capable of remarkably improving the recovery rate of the micro-fine particle cassiterite and highin adaptability.

The invention provides a gangue inhibitor of high-argillization low-grade skarn copper molybdenum ore, and belongs to the field of copper-molybdenum separation flotation for skarn copper molybdenum ore. The gangue inhibitor comprises the following substances by mass percent: 85% to 95% of water glass, 0.1% to 1% of carboxymethyl cellulose, 1% to 5% of sodium fluoride and 1% to 10% of sodium metabisulfite. The preparation concentration of the inhibitor is 0.1% to 1%, stirring time is larger than or equal to 30 min, and dosage is 2 kg/t to 4 kg/t. The gangue inhibitor has the advantages that water glass, carboxymethyl cellulose, sodium fluoride and sodium metabisulfite are combined into inorganic colloid, the gangue inhibitor has a good inhibition function on high-argillization gangue minerals like calcite, wollastonite, dolomite, quartz and silicate during the practice process, a preparation method is easy and convenient, cost is low, muddy gangue minerals during the copper-molybdenum separation flotation process can be effectively inhibited, and the grade of molybdenum concentrate is improved.

The invention discloses a method for searching covered-area skarn-type copper-gold deposit by means of high-precision gravitational prospecting. The method comprises the steps of compiling a metallogenic formation construction drawing through analyzing a metallogenetic geological condition; defining an ore searching target area; performing 1/10000 high-precision gravity measurement, and defining a skarn alteration area range; performing steps such as drilling and mineral reserve verifying for gradually reducing a target range, and realizing accurate ore searching. Compared with the prior art, the method is advantageous in that the skarn range of the covered area is defined according to residual gravity abnormity, thereby realizing a purpose of indirect ore searching. The invention provides the method for searching the covered-area skarn-type copper-gold deposit for filling related gaps. According to a gravitational prospecting principle, the invention provides the method for searching the covered-area skarn-type copper-gold deposit by means of a high-precision gravimetric prospecting method. According to the residual gravity abnormity, the skarn range is defined. The method for searching covered-area skarn-type copper-gold deposit by means of the high-precision gravimetric prospecting method is firstly realized in China.

The invention provides a method for distinguishing ore types based on garnet micro-area chemical components, which comprises the following steps of: acquiring training sample data, and screening trace element contents by utilizing system clustering analysis to serve as model factors for determining ore types; determining a canonical discriminant function of the mineral type and the trace element content by utilizing canonical discriminant analysis, and screening out an optimal canonical discriminant function combination to establish a supervised classification model; and determining the ore type of the to-be-explored ore deposit by using the supervised classification model. The technical scheme provided by the invention has the beneficial effects that the method for judging potential ore types by utilizing the components of the garnet in the skarn type ore deposit provides a garnet trace element quantitative index and formula for quickly judging the ore types, so that the accuracy of quickly judging the ore types and predicting the target region can be greatly improved; the method overcomes the difficulties of low efficiency, long period and high cost of a traditional mineral type discrimination method in the early stage of mineral exploration.

The invention provides a method and device for determining lithology of clastic garnet mineral mother rock. The method comprises steps of preliminarily determining the lithology of the clastic garnetmineral mother rock through employing a garnet Mg-Fe+Mn-Ca main element discrimination graph according to a main element analysis result of a to-be-detected clastic garnet mineral; and when the main element analysis result of the to-be-detected chip garnet mineral falls in the Type A, Type B or Type D region of the discrimination graph, further determining the parent rock lithology of the to-be-detected chip garnet mineral by utilizing the trace element analysis result of the to-be-detected chip garnet mineral. According to the method, garnets from a basic rock source and a variable basic rocksource can be more systematically and accurately distinguished, garnets from different types of skarn sources can be distinguished, and garnets from a granite source, a high-grade granite phase-change argillaceous rock source and a medium-low-grade hornstone phase-change argillaceous rock source can be distinguished; and therefore, the method plays an important role in the aspects of material source recovery research, even basin-mountain coupling relationship research and the like.

The invention discloses a beneficiation process of skarn type magnetite containing copper and gold. The beneficiation process of the skarn type magnetite containing copper and gold comprises the following steps that firstly, the dimension of ores is made to reach less than 12mm through three-stage closed-circuit crushing, sorting is conducted through a permanent magnet wet magnetic separator, magnetic separation concentrates directly enter a ball mill, and magnetic separation tailings enter a linear vibrating screen to be screened; secondly, bulk flotation is performed after ore grinding to obtain copper-sulfur bulk concentrates, and the copper-sulfur bulk concentrates are subjected to copper-sulfur separation to obtain qualified copper concentrates and sulfur concentrates; and thirdly, the bulk flotation tailings enter a one-roughing two-concentration one-scavenging magnetic separation process to obtain qualified iron ore concentrate products. According to the beneficiation process ofthe skarn type magnetite containing copper and gold, after the ores are crushed, special metal distribution with a low copper grade in non-magnetic ores in coarse fraction is fully utilized, a pre-selection process before grinding is added, discarded waste coarse particles can be sold as building materials to generate economic benefits, and meanwhile, the grinding and separation cost and the tailing treatment cost of the discarded waste coarse particles are reduced; and fine-fraction materials in the non-magnetic materials do not enter the ball mill any more.

The invention relates to a water purifying agent. The water purifying agent is prepared from, by weight, 30-42% of magnesium oxide, 12-36% of calcium oxide, 10-30% of skarn and 6-16% of titanium dioxide. The water purifying agent has the advantages that the water purifying effect is obvious; the service life is long, and the water purifying agent can be repeatedly used; the water purifying agent is convenient to use, low in price and capable of being used for purifying various industrial wastewater, domestic sewage, lake water, river water and tap water.

The invention discloses a recycling process of associated low-grade silver and cobalt in skarn type cupreous magnetite. The recycling process comprises the following steps of (1) performing bulk flotation on the skarn type cupreous magnetite, so that copper-sulfide mixed concentrate is obtained; (2) finely grinding the copper-sulfide mixed concentrate, so that the degree of dissociation of silverand cobalt carrier minerals is increased; (3) obtaining high-copper concentrate products with high silver content which is greater than 20 g/t by adopting a partial selective floatation process first,and then obtaining low-copper concentrate and sulfur concentrate with low silver content by adopting a separation flotation process, so that the enrichment and recycling of silver in copper and sulfide separation flotation are realized; and (4) deironing the sulfur concentrate, so that cobalt-sulfur concentrate products with the cobalt content which is greater than 0.28% can be obtained. According to the recycling process, the high-copper concentrate products with the silver content which is greater than 20 g/t and the cobalt-sulfur concentrate products with the cobalt content which is greater than 0.28% are obtained, the recycling of the associated low-grade silver and cobalt in the skarn type cupreous magnetite is realized, and the economic benefit of mineral resources is greatly increased.

The invention discloses a skarn type iron mine drilling technology for thick-covering areas. The technology includes the steps that a drilling tested well site is locked and is subjected to geology exploration; geological data of the well site is investigated and surveyed and estimated whether to drill or not, and drilling equipment is erected; pre-solidification treatment is performed around thedrilling site; and shaft-drilling is performed. The skarn type iron mine drilling technology for thick-covering areas has great significance in searching high-grad iron ore deposit, the areas possiblycontaining of high-grad iron ore deposit are locked, drilling exploitation is performed, the space model of the high-grad iron ore deposit is analyzed and determined, and the technology has great advantages for searching the high-grad iron ore deposit.

The invention discloses a beneficiation method for molybdenum-containing high-zinc complex magnesium silicate altered skarn type copper ore. The beneficiation method comprises the steps of first-stage ore grinding, copper-molybdenum-zinc-talc mixed roughing, second-stage ore grinding, copper-molybdenum-zinc-talc mixed concentration, copper-molybdenum-zinc-talc flotation separation, molybdenum-zinc-talc reselection separation and molybdenum-zinc column type separation. According to the method, in the full flotation process, talc and other easily-floating magnesium silicate minerals are not inhibited, but are removed through centrifugal reselection, the problems of target sulfide metal mineral inhibition, tailing filtration and the like caused when easily-floating gangue is inhibited by a macromolecular inhibitor in traditional mineral separation are solved, and the recovery rate of target sulfide multi-metal minerals is increased to the maximum extent.