2212 results about "Tailings" patented technology

The invention relates to an anorthite material and a preparation method thereof. The adopted technical proposal comprises the following steps of: according to (ZL200510019664.3) patent technology, namely a method for preparing titanium and a titanium alloy by utilizing titanium-containing furnace slag, taking molten tailings which is extracted with the titanium alloy as a raw material, adding 20 to 50 weight percent of silica, 0 to 60 weight percent of clay and 0 to 40 percent aedelforsite, and cooling a melt to obtain the anorthite material after the mixture is completely molten and a bath composition is uniform; or taking cold tailings extracted with the titanium alloy as the raw material, adding 20 to 50 weight percent of the silica, 0 to 60 weight percent of the clay and 0 to 40 percent the aedelforsite, carrying out mix grinding on the raw material and the admixture until the particle size is less than 0.1 mm, performing blank compression, and calcining the mixture at a temperature of between 1,200 and 1,400 DEG C to obtain the anorthite material. The method takes the tailings extracted with the titanium as the raw material, saves precious bauxite resources, has low cost, ensures that industrial residue is utilized with high added value, is environment-friendly and has simple process.

The invention belongs to the technical field of comprehensive utilization of industrial solid wastes, and particularly relates to a sawing mud-graphite tailing road base material as well as a preparation method and application thereof. The road base material is prepared by mixing saw mud, graphite tailings, a red mud-based cementing material, a reinforcing agent and water. The sawn mud-graphite tailing road base material is applied to a heavy traffic load road base with the strength requirement of 4.0-6.0 MPa. According to the sawing mud-graphite tailing road base material, all aggregates in a traditional road base material are jointly replaced by sawing mud-graphite tailings, and the red mud-based cementing material is adopted for curing, so that the utilization efficiency of solid waste recycling is greatly improved; and the problems of shortage of sand and gravel resources and high material cost of construction engineering in the road engineering construction process are relieved.

The invention discloses a fluoride-free flotation-microbiological leaching-multistage magnetic separation synergistic tailing purification process, which takes mine tailings as raw materials and is realized by the following steps: 1, fluoride-free flotation desliming and impurity removal: replacing hydrofluoric acid with a novel anion collector (fatty acid derivative), and preferentially removing mica and feldspar under the condition that the pH is 2.5-3.5; 2, removing iron and aluminum by microbiological leaching: leaching for 48 hours at the temperature of 35 DEG C by utilizing an acidophilus bacillus ferroxidans bacterial solution, and dissolving Fe2O3 and Al2O3 in a wrapped state; 3, high-gradient magnetic separation refining: removing magnetic minerals through 1.2 T strong magnetic separation, and then separating weak magnetic impurities through 0.8 T weak magnetic separation; the indexes of the final product are as follows: the purity of SiO2 is greater than or equal to 99.9%, the whiteness is greater than or equal to 94% (ISO standard), the content of Fe2O3 is less than or equal to 80ppm, Al2O3 is less than or equal to 1200ppm, and the requirements of electronic grade (IOTA-4 standard) quartz powder are met.

The invention provides an alkali-activated gel material as well as a preparation method and application thereof. The alkali-activated gel material is prepared from a composite alkali activator and a solid waste gel material, the composite alkali activator is formed by mixing water glass and NaOH, and the mass ratio of the water glass to the NaOH is 2000: (350-520); the solid waste gel material is formed by mixing iron tailing sand, limestone and fly ash, and the ratio of the total mass of the limestone and the fly ash to the mass of the iron tailing sand is (70-80): (30-40); the mass ratio of the composite alkali activator to the solid waste gel material is (0.32-0.38): 1. The alkali-activated cementing material is prepared by cooperatively treating the iron tailing sand through the limestone and the fly ash, and the alkali-activated cementing material with good mechanical properties can be prepared by regulating and controlling the mass ratio of the raw materials.

The invention discloses an efficient filling method for an underground small goaf group, and the method comprises the steps: constructing a three-dimensional model through laser radar scanning, and marking a communication relation and the stability of a top plate; dividing the goaf group into a main filling area and a secondary filling area, and designing a fractal topological structure drainage channel to form a gravity flow network; preparing filling slurry taking a cementing material, tailings and the like as main materials, and controlling parameters such as slump, initial setting time and the like; then, stepped pressure self-adaptive filling is adopted, slurry is injected in two stages, and the pressure and the flow speed are controlled; according to the method, the problems that traditional filling blind areas are large in number, material waste is serious and efficiency is low are solved, low-pump-pressure global coverage is achieved, the roof contact rate is remarkably increased, safe and efficient mining of mines is guaranteed, the comprehensive cost is reduced, and the method is suitable for underground small goaf group filling.

The invention relates to a method for preparing sponge iron from laterite-nickel ore hydrometallurgy tailings, which comprises the following steps: (1) carrying out acid leaching on laterite-nickel ore hydrometallurgy tailings to obtain leached residues without at least part of CaSO4; (2) oxidizing and roasting the leaching residues obtained in the step (1), so that at least part of sulfate is discharged as sulfur-containing gas; performing hydrogen reduction to obtain a reduced material; and (3) the reduction material in the step (2) is sequentially subjected to ore grinding and magnetic separation, and the sponge iron with the Fe content being 90 wt% or above and the S content being 0.01 wt% or below is obtained. According to the method, iron resources in the laterite-nickel ore hydrometallurgy tailings are recycled, desulfurization and reduction are carried out step by step, the desulfurization efficiency is improved, the reduction temperature is reduced, and the sponge iron with the Fe content being 90 wt% or above and the S content being 0.01 wt% or below is obtained.

The invention provides a method for quality-divided regeneration of silicon dioxide from ardealite by using a flotation and acid leaching coupling melting purification technology, and relates to the technical field of regeneration of silicon dioxide from ardealite, the method comprises the following steps: S1, adding a nonionic collecting agent into ardealite ore pulp for reverse flotation to obtain rough machining ardealite; s2, carrying out direct flotation on the rough machining ardealite obtained in the step S1 to obtain silicon ardealite tailings; s3, drying and crushing the silicon phosphogypsum tailings, uniformly mixing the silicon phosphogypsum tailings with a washing agent, and acidizing to remove impurities, so as to obtain silicate; and S4, adding the silicate obtained in the step S3 into a dissolving agent, reacting to obtain silicon dioxide colloid, and calcining to obtain silicon dioxide with the purity as high as 99.9%.

The invention relates to the technical field of coal gangue resource utilization, in particular to a magnetic coal series kaolin hydrogel adsorbing material as well as a preparation method and application thereof. The preparation method of the material specifically comprises the following steps: carrying out ultrafine grinding, sieving and grading on coal gangue ore to obtain a coal series kaolinite material; further performing magnetic separation to obtain coal series kaolinite iron-rich tailings; further performing magnetizing roasting in a reducing atmosphere to obtain magnetic coal series kaolin; the preparation method comprises the following steps: compounding magnetic coal series kaolin with sodium alginate and chitosan by adopting a gel coating method, dropwise adding a calcium chloride solution for crosslinking, and freeze-drying to obtain the magnetic coal series kaolin hydrogel material. The preparation method is simple, and the obtained adsorption material has the characteristics of low cost, large adsorption capacity, high adsorption rate, high selectivity, excellent cyclic utilization performance and the like.

The invention provides a foundation pit water gushing iron ore grading thixotropic blockage reduction method which comprises the steps that iron ore tailings are crushed and screened into multi-stage particle size particles, and a customized mold is subjected to 3D printing based on foundation pit scanning data; paving particles in a mold layer by layer, doping iron powder, and cementing and curing cement paste to form a prefabricated body; the prefabricated body is installed to a water gushing area, the slurry viscosity is increased through a grading contact network, a weak gravitational flow state is triggered to be transiently changed to an anti-scouring state, and water flow speed reduction is achieved; alternating field induction micro-vibration is synchronously started during lateral grouting, and grout permeation and bubble discharge are driven; after solidification, the guide core body is pulled away, and remaining pore channels are self-compacted by a grading system to form an anti-seepage structure. The method has the advantages that the anti-scouring performance is enhanced; particle-slurry-foundation pit curved surface triple self-adaptive combination is carried out; the engineering cost is reduced.

The invention discloses a moss ecological brick and a preparation method thereof, and relates to the technical field of ecological restoration, the moss ecological brick comprises a moss gametophyte matrix and a brick body, the brick body comprises the following raw materials: a tailing composite material, metakaolin, an acid activator and water, and the tailing composite material comprises phosphate tailings and iron tailings. The phosphate tailings and the iron tailings can provide necessary phosphorus elements, other trace elements and the like for the growth of the moss, and the acid activator in the brick body not only can provide a weak acid environment to facilitate the good growth of the moss, but also can solve the problem of saltpetering of the brick body in the environment; the growth of the moss can effectively relieve sulfate erosion of the acid-activated material, and a good curing environment is provided for the acid-activated concrete brick body. Therefore, in the moss ecological brick provided by the invention, the acid-activated concrete brick body can supplement and promote the growth of moss.

The invention discloses a method for preparing high-purity quartz and recovering an iron element based on high-silicon tailings, and belongs to the technical field of comprehensive utilization of resources and preparation of high-purity quartz. According to the method, high-silicon tailings are sequentially subjected to mineral dissociation, low-magnetic-field roughing, high-magnetic-field scavenging, flotation and ultrasonic acid leaching treatment, and refined quartz is obtained; and carrying out multi-stage gradient chloridizing roasting and hot-pressing acid leaching treatment on the refined quartz of which the gas-liquid inclusion index and transparency meet the requirements to finally prepare the high-purity quartz of which the SiO2 purity is greater than or equal to 99.995%. In addition, for strong magnetic minerals generated in the magnetic separation process, the iron content of the strong magnetic minerals reaches the standard, the strong magnetic minerals react with the acid leaching filtrate under the ultrasonic strengthening condition to leach iron ions, and iron-rich filtrate is subjected to an iron precipitation reaction to generate iron carbonyl. The method provided by the invention not only provides a reliable judgment basis and a complete technical route for preparing high-purity quartz from the high-silicon tailings, but also opens up a new way for resource utilization of the tailings, and has remarkable industrial application value and environmental benefits.

The invention discloses a method for recovering iron in tailings of copper separation from copper smelting slag through combination of microwave-assisted oxidizing roasting and magnetic separation, and belongs to the technical field of metallurgical solid waste resource utilization. The method comprises the steps that high-temperature copper smelting slag is subjected to water quenching, crushing and ore grinding, flotation and copper removal to obtain tailings containing silicon iron, after a calcium-based additive is added for ball milling and mixing, microwave oxidizing roasting is conducted under the oxygen-enriched condition, roasting products are subjected to high-gradient magnetic separation after crushing and ore grinding, and iron ore concentrate and magnetic separation tailings are obtained. According to the method, the strong wave-absorbing characteristic of fayalite is utilized, the roasting temperature and energy consumption are reduced through microwave heating, iron-silicon separation is achieved through a calcium-based additive, and iron is recycled through magnetic separation in one step. The final magnetic separation iron recovery rate reaches 85% or above, the iron ore concentrate grade exceeds 60%, magnetic separation tailings can be used as building materials, the process is simple, the cost is low, environment friendliness is achieved, the defects of a traditional process are overcome, and high-value utilization of solid waste is achieved.

An efficient multiphase-flow graded-separation, concentration, and purification system for argillaceous sandstone uranium ore includes a hydraulic tossing washing and scattering pretreatment device, a high-frequency linear vibration grading device, a first-stage multiphase-flow swirling grading device, an energy-gathering ultrasonic scrubbing device, a second-stage multiphase-flow swirling grading device, a high-frequency linear vibration dewatering device, an efficient uniform-mixing and activating system and a conditioning and pressing dewatering system. The present disclosure implements intensive mud-sand stripping of crushed argillaceous sandstone uranium ore, fine graded-separation of material, and efficient uniform-mixing and activating and deep efficient dewatering of fine-particle argillaceous material. Finally, four types of core material of coarse sand material, fine sand material, dry tailings residue and a high-concentration uranium ore leaching solution are formed through continuous work. Efficient multiphase-flow graded-separation, concentration and purification of the argillaceous sandstone uranium ore are implemented, and an intensive extraction rate of uranium ore resources is improved.

The invention discloses a ternary solid waste gelling system mine cemented filling material, a preparation method and application, phosphogypsum and water-quenched slag powder are used as main gelling components, carbide slag is used as an exciting agent, and phosphate tailings and phosphorus tail mud are used as filling body aggregate to form the high-content phosphogypsum ternary solid waste gelling system mine cemented filling material. Wherein the ternary solid waste gel system comprises the following components in percentage by weight: 10-18% of carbide slag, 36-54% of ardealite and 36-54% of water-quenched slag powder, and the ratio of ardealite / (ardealite + water-quenched slag powder) is 0.4-0.6. The mine cemented filling material disclosed by the invention is prepared by taking solid wastes of industrial byproducts of a phosphorite mountain and the periphery of the phosphorite mountain as main raw materials, and the mechanical property of the prepared filling slurry after solidification needs to meet an engineering filling strength index, so that efficient resource utilization of a large amount of industrial solid wastes for phosphorite resource development can be realized; good mechanical properties and remarkable economic and environmental benefits are achieved.

According to the method, sodium carbonate, limestone and coke are used as sintering aids and are uniformly mixed with the high-iron Bayer process red mud, the mixed material is sintered by adopting a one-step low-calcium reduction sintering process, and the sintered clinker is subjected to water leaching and dissolution to obtain a sodium aluminate crude solution and filter residues. And returning the sodium aluminate crude liquid to an aluminum oxide industrial production line to prepare aluminum oxide, and carrying out a hydrolysis alkali recovery process on filter residues to obtain industrial sodium carbonate. The hydrolysis residues are subjected to magnetic separation and recovery to obtain fine iron powder, and the remaining tailings are completely harmless and can be used as raw materials of building materials or used for soil backfilling. The process is characterized in that the one-step low-calcium reduction sintering temperature is 200-300 DEG C lower than the sintering temperature of a sintering method, and the energy consumption is low; na2CaSiO4 is a sintering target product, Ca2SiO4 generally generated by a traditional sintering method is not generated, the situation that Ca2SiO4 is hydrolyzed in the water leaching process to inhibit dissolution of aluminum oxide is avoided, and the recycling rate of aluminum oxide is increased while the using amount of limestone is greatly reduced. The technological process is simple, efficient, energy-saving and free of three-waste emission, and the method is a novel method capable of treating the high-iron red mud in a large-scale and reduction mode.

The invention discloses a beneficiation method for tin-silver symbiotic polymetallic ore and application of the beneficiation method, and relates to the technical field of mineral separation. Comprising the steps that after tin-silver symbiotic polymetallic ore is ground, undersize minerals are obtained through a high-frequency screen, silver-copper flotation is conducted on the undersize minerals, and silver-copper concentrate and silver-copper tailings are obtained; the silver-copper tailings are subjected to lead-zinc-sulfur flotation, and lead concentrate and zinc-sulfur tailings are obtained; and the zinc-sulfur tailings are subjected to zinc-sulfur flotation, and zinc-sulfur concentrate and tin-sulfur tailings are obtained. The concentration of ore pulp in the ore grinding process is controlled, it is guaranteed that cassiterite and sulfide minerals are fully dissociated, then a first inhibitor is added in the lead-zinc-sulfur flotation process, the valuable metal recovery efficiency can be enhanced by optimizing the flotation process and collaboratively innovating a reagent formula according to the complex characteristics of tin-silver symbiotic polymetallic ore, and the recovery rate of the tin-silver symbiotic polymetallic ore is increased. The contents of silver, copper and tin in the tailings are obviously reduced, and efficient utilization of resources and reduction of solid wastes are realized.

The invention provides a flotation pretreatment reagent system and a method for treating gold-bearing waste soot and recycling gold through the flotation pretreatment reagent system, and belongs to the technical field of hydrometallurgy. According to the invention, a multi-agent synergistic agent system is designed, a gold recovery system of'catalytic oxidation-bridging anchoring-hydrophobic flotation 'is constructed, and strategy transformation from passive inhibition of carbon adsorption to active separation of a carbon carrier is successfully realized. Compared with a traditional method which only tries to passivate the adsorption activity of carbon, the method has the advantages that gold-robbing carbon interfering with gold recovery is converted into a flotation carrier easy to separate through accurate reagent matching, and the problem that carbonaceous interferes with cyaniding gold extraction is fundamentally solved. The modified carbon agglomerates are subjected to efficient flotation separation due to the excellent hydrophobic characteristic, and the gold is enriched in the tailings due to the fact that the gold is not hydrophobized. According to the method, the gold recovery rate of follow-up cyanidation leaching is remarkably increased, the agent consumption is greatly reduced, and the important technical value of achieving technological process innovation through molecular-level collaborative design is shown.

The invention discloses a method for extracting copper fine powder by flotation of copper-containing ore, which belongs to the technical field of mineral processing, and comprises the following steps: after copper-containing raw ore is crushed, ground and classified by a cyclone, overflow enters flotation, and settled sand is returned for regrinding; sodium carbonate is added into graded overflow to adjust the pH, a sodium hexametaphosphate-polyacrylamide composite dispersant is added, and copper sulfate is added and stirred after low-temperature microwave heating; gradient flotation is conducted, specifically, copper sulfide is roughly selected, the pH is adjusted, an amino-sulfonic acid group synergistic modified layered double metal hydroxide / cobalt ferrite composite collecting agent is added, and rough concentrate 1 is obtained through high-frequency pulse air inflation flotation; copper oxide roughing is conducted, clear water is supplemented to adjust the pH, and a collecting agent is supplemented to obtain rough concentrate 2; scavenging is performed for three times, a collecting agent is added for flotation, and concentrate returns to the previous stage; the rough concentrates are combined, and magnetic impurities are removed through high-gradient magnetic separation to obtain magnetic concentrates; and carrying out microbiological leaching on tailings to recover copper. The composite collecting agent is prepared through layered double hydroxide carrier synthesis, amino modification, sulfonic acid group grafting and cobalt ferrite anchoring.

The invention discloses an ecological slope protection material, system and method based on struvite biomineralization technology.The ecological slope protection material comprises a slope stabilization material and a vegetation matrix, the slope stabilization material is composed of an enzyme-induced phosphate precipitation reaction solution and an enzyme-induced carbonate precipitation reaction solution, and through the synergistic effect of the two biomineralization technologies, the slope stabilization material can be used for slope protection. A biological mineralization reaction occurs in the side slope to generate struvite, magnesium carbonate and other minerals, so that side slope tailing sand reinforcement and heavy metal stabilization are realized, and slow-release nutrition is provided for plant growth. The invention further constructs a multi-layer slope protection system comprising a slope lattice beam, an in-situ remediation area, a slope drainage layer and a slope vegetation layer, and the multi-layer slope protection system is achieved through a construction method combined with a special grouting-sprinkling irrigation device. And finally, integrated safety reinforcement and ecological regreening of the side slope of the heavy metal tailings pond are achieved.

The invention discloses an efficient consolidation agent for tailings in an underground mine filling mining method and a preparation method thereof, and relates to the technical field of consolidation agents, the consolidation agent is prepared from a gelling base material, a nano reinforcing agent, a chemical exciting agent and an organic fiber reinforcing agent according to a specific mass ratio; aiming at the problems of unstable volume, insufficient strength and the like of a traditional consolidation agent, through high-temperature calcination of the steel slag to eliminate harmful components, dealkalization treatment of the red mud, acid activation of the phosphogypsum and volcanic ash reaction of the fly ash, the volume stability and the gelling activity of a filling body are remarkably improved, and the consolidation agent is suitable for complex underground environment requirements; aiming at the pain points of low early strength, weak interface bonding and the like of the consolidation agent, the cohesion is improved by strong bonding of the surface-modified nano SiO2 and a gelling base material, a chemical exciting agent is added to cooperate with CO2 carbonization to generate nano crystal nucleuses, hydration sites are provided, a pore structure is optimized, bleeding is inhibited, the fluidity and stability of slurry can be effectively improved, and the consolidation effect is good. And the requirements of underground filling homogeneity and pumpability are met.

The invention discloses a raw ore mineral parameter-based tailing index dynamic prediction method, which comprises the following steps of: establishing a quantitative correlation model of mineral parameters and tailing indexes according to the grade alpha of a target element in a raw ore, the weight content W of a target mineral, the content D of the target element in the target mineral and the dissociation degree under a certain fineness condition; based on the model, tailing indexes corresponding to different intergrowth types can be predicted in real time, a traditional laboratory multi-round verification test is replaced, reagent consumption is reduced, and the test period is shortened. And meanwhile, optimal ore dressing process parameters are reversely deduced by setting an environmental protection threshold value, collaborative optimization of the resource recovery rate and environmental protection compliance is achieved, and the technical problems of resource waste and excessive emission in a traditional ore dressing process are solved.

The application discloses a beneficiation separation method for high-copper and low-zinc high-sulfur polymetallic ore, which comprises the following steps: A, after crushing the raw ore, ball milling and grading are performed, the sand is returned to the ball mill, and the overflow product is fed into a copper roughing process; B, copper roughing is performed; C, the roughing concentrate is subjected to copper cleaning process to obtain copper concentrate, and the roughing tailings are fed into a copper scavenging process; D, copper scavenging is performed, the scavenging tailings are subjected to grading, the sand is returned to the ball mill, and the overflow product is fed into a zinc roughing process; E, zinc roughing is performed, the roughing concentrate is subjected to zinc cleaning process to obtain zinc concentrate, and the roughing tailings are subjected to zinc scavenging process to obtain zinc tailings. The application efficiently realizes the separation of copper concentrate and zinc concentrate by fully utilizing the mineral particle size distribution characteristics, introducing a particle size grading system and improving the flotation reagent, and has the technical characteristics of high separation yield, easy operation, stable separation index and the like.

The invention relates to a resourceful treatment method for a bauxite ore washing tail mud reservoir, which comprises the following specific steps: 1, carrying out cyclone classification on tail mud in the tail mud reservoir, and separating out coarse particles with A / S greater than or equal to Y and A / Slt; and Y fine particles. And 2, carrying out flotation treatment on the coarse particles. And potassium carbonate is added as a dispersing agent and a pH value adjusting agent, the pH value of the ore pulp is adjusted to 8.0-10.5, then sodium oleate is added as a collecting agent, and finally bauxite concentrate and flotation tailings are obtained. And 3, dehydrating the fine particles to obtain dehydrated tail mud with the water content of less than or equal to 20%. And 4, adding the flotation tailings and the dehydrated tail mud into a curing agent or a soil conditioner to form cultivable soil which is used for ecological restoration of the stony desertification area. Potassium carbonate is used for replacing sodium carbonate to reinforce flotation, so that tailings can be used as potassium-rich cultivation soil; the dam break risk can be eliminated after the tail mud is dehydrated; tailings and fine particles are compounded to form cultivation soil to treat stony desertification, silicon fertilizer is synchronously produced, the annual income is larger than or equal to 0.3 million yuan, and safe, resource and ecological cooperative treatment is achieved.

The utility model relates to the technical field of magnesite flotation, in particular to a magnesite flotation tailing defoaming device, which is characterized in that a feed port and a discharge port are respectively arranged at the upper end and the lower end of a defoaming tank in a penetrating manner; the top end of the rotating rod is rotationally connected into the defoaming tank through a bearing, the motor is fixedly arranged on the top surface of the defoaming tank, the output end of the motor is connected with the end part of the rotating rod, the motor is connected with an external power supply, and defoaming paddles are fixedly arranged at the bottom end of the rotating rod; a plurality of drainage blades are fixedly arranged on the rotating rod at equal angles and are positioned above the defoaming paddles; the drainage tube is arranged on the rotating rod in a sleeving mode through a plurality of supporting rods, and the drainage blades are located in the drainage tube. The drainage assembly is arranged at the bottom end of the drainage pipe, and the defoaming paddle is located in the drainage assembly; according to the defoaming device, foam liquid is drained to the defoaming blades through the matching effect of the drainage blades and the drainage pipes, and foam can be effectively broken through special design in cooperation with the shapes and the materials of the blades, so that the defoaming efficiency is improved.

The invention provides a ceramsite proppant as well as a preparation method and application thereof. The method comprises the following steps: grinding a coal gangue raw material, pre-sintering, cooling and then grinding again; grinding the tungsten tailing sand, the low-grade bauxite, the carbide slag and the clay; grinding after mixing the raw materials; the raw materials comprise 45-60 parts of low-grade bauxite, 20-35 parts of pre-sintered coal gangue, 15-20 parts of tungsten tailing sand, 1-5 parts of carbide slag and 7-14 parts of clay; the total amount of the low-grade bauxite, the pre-sintered coal gangue and the tungsten tailing sand is 100 parts; granulating and drying; carrying out first sintering at 800-950 DEG C; second sintering is conducted at the temperature of 1050-1200 DEG C; and naturally cooling to obtain the ceramsite proppant. The technical problem to be solved is how to realize high-valued utilization of mine solid waste and low-grade bauxite, reduce dependence on high-quality bauxite and production cost, reduce sintering energy consumption and carbon emission, reduce product body density and improve key performance such as strength and sphericity of the proppant by optimizing raw material combination and a preparation process. And the requirements of oil and gas field fracturing operation are met.

The invention provides a ceramic green body based on lithium slag and wollastonite, a ceramic tile and a preparation method, and the ceramic green body comprises the following raw materials by weight: 25-35% of clay, 15-25% of lithium slag, 10-20% of wollastonite tailings, 15-25% of potassium-sodium feldspar, 15-25% of quartz, 0-3% of calcium phosphate, and 0.5-0.8% of a dispergator. The lithium slag and the wollastonite tailings are doped into the formula of the ceramic body, a low-aluminum high-calcium billet system is established by combining the clay, the potassium-sodium feldspar, the quartz and the auxiliary raw materials, and the characteristics of the lithium slag and the wollastonite are utilized, and the formula of the ceramic body is adjusted and optimized, so that the low-aluminum high-calcium ceramic body is obtained. The low-aluminum high-calcium green body formula which is low in firing temperature, wide in firing range and easy to control kiln firing can be obtained, energy consumption is remarkably reduced, the utilization rate of the lithium slag and the wollastonite tailings is increased, the production cost of ceramic tiles is reduced, and meanwhile the strength of ceramic products is improved.

The invention provides a beneficiation method for copper-zinc associated gold ore, and relates to the field of beneficiation. The raw ore is subjected to pulping, copper, zinc and other floatable roughing, and copper, zinc and other floatable rough concentrate and copper, zinc and other floatable roughing tailings are obtained; performing copper separation roughing on the iso-floatable rough concentrate to obtain copper rough concentrate and separation roughing tailings, performing concentration on the copper rough concentrate to obtain copper concentrate, and performing scavenging on the separation roughing tailings to obtain zinc scavenging concentrate; zinc-sulfur mixed roughing is carried out on floatable roughing tailings such as copper and zinc to obtain zinc-sulfur roughing concentrate and zinc-sulfur roughing tailings, zinc-sulfur concentration is carried out on the zinc-sulfur roughing concentrate to obtain zinc-sulfur concentrate, zinc-sulfur separation roughing is carried out on the zinc scavenging concentrate and the zinc-sulfur concentrate to obtain zinc rough concentrate and sulfur rough concentrate, and scavenging is carried out on the sulfur rough concentrate to obtain sulfur concentrate; zinc concentration is carried out on the zinc rough concentrate to obtain gold-containing zinc concentrate, carbon leaching is carried out on the gold-containing zinc concentrate to obtain leached ore pulp and gold-loaded carbon, filter pressing is carried out on the leached ore pulp to obtain zinc concentrate and cyanogen-containing barren liquor, and the gold-loaded carbon is analyzed to obtain regenerated carbon and pregnant solution. According to the method, efficient comprehensive recovery of raw ore is achieved.

The invention discloses a multi-component magnesium refractory aggregate using copper slag flotation tailings as raw materials and a preparation method thereof, the multi-component magnesium refractory aggregate is obtained by using copper slag flotation tailings powder, light-burned MgO powder, magnesite powder and alpha-Al2O3 powder as raw materials through compression molding and calcination. The preparation method comprises the following steps: mixing the copper slag flotation tailing powder, the light-burned MgO powder, the magnesite powder and the alpha-Al2O3 powder in a mixer to obtain mixed powder; adding a binding agent solution into the mixed powder, and performing mechanical pressing to obtain a green body; and heating the formed green body to 950-1150 DEG C, preserving heat for 4-6 hours, finally heating to 1480-1580 DEG C, preserving heat for 4-6 hours, cooling, crushing, and screening to obtain the multi-component magnesium refractory aggregate. According to the method, the copper slag flotation tailing powder is used as the raw material, resource utilization of the copper slag flotation tailings is achieved, and the obtained multi-component magnesium refractory aggregate is suitable for a cement rotary kiln.

The present application belongs to the technical field of underground filling of metal mines, and particularly relates to an iron tailings powder-based cementitious material for mine full tailings cemented filling, a preparation method and application thereof. The geopolymer-based anti-cracking mortar is made of iron tailings ultrafine powder, ore powder, sulphoaluminate clinker, Portland cement clinker, desulfurization gypsum and methyl cellulose ether. The iron tailings powder-based cementitious material can completely replace ordinary Portland cement in full tailings filling and achieve better cementing effect than cement, thereby greatly reducing the consumption of cement and other cementitious materials, lowering the filling cost, reducing carbon emissions and increasing the utilization rate of tailings. The rheological properties, mechanical properties and durability of the full tailings cemented filling material made of the iron tailings powder-based cementitious material can meet the requirements of mine filling, and the material can achieve the effect of expansion and roof contact without adding external additives, thereby solving the shrinkage problem of cement-based filling materials.

The invention relates to the technical field of tailing concrete poles, in particular to a prestressed tailing concrete pole and a manufacturing method thereof, and the prestressed tailing concrete pole comprises the following components in parts by mass: 550-600 parts of modified iron tailings, 180-200 parts of a prestressed modifier, 500-600 parts of slag, 30-45 parts of silica fume, 180-200 parts of fly ash, 6-8 parts of a polycarboxylate superplasticizer, 5-10 parts of a viscosity modifier and 5-10 parts of an auxiliary enhancer. Through the synergistic effect of the prestress modifier, the viscosity modifier and the modified iron tailings, bleeding and segregation of the high-volume tailing concrete in the vibrating process are prevented, the homogeneity of the material is ensured, the formed electric pole has extremely high internal compactness and a smooth surface, and therefore the freeze-thaw resistance and durability of the electric pole are greatly improved. The modified iron tailings are used for replacing part of traditional cementing materials and aggregates, so that the production cost is remarkably reduced, extremely high additional value is given to industrial solid wastes, the problems of environmental risk and land occupation caused by stockpiling of the industrial solid wastes are solved, and the national green development strategy is met.