35 results about "Secondary mineral" patented technology

The invention discloses a method for recycling positive-negative electrode defective materials of waste lithium waste lithium cobalt oxide lithium-ion batteries. By combing technologies such as high-speed impact crushing, vibration screening, anaerobic atmospheric roasting, wet-type magnetic separation and temperature-variable filtration, products such as elemental cobalt, lithium carbonate and graphite powder are prepared from the positive-negative electrode defective materials of waste lithium waste lithium cobalt oxide lithium-ion batteries; the materials are separated and enriched in such manners as high-speed impact crushing, vibration screening and wet-type magnetic separation, the original physical properties of the materials are retained, the negative electrode graphite material is fully utilized, the in-situ preparation of resources is achieved and the cost is saved; the anaerobic atmospheric roasting is adopted, the reaction conditions are relatively loose, the graphite material loss is decreased, the flow is simplified, any chemical agent is not needed in the entire process, no secondary pollution is caused and the industrial application practice is facilitated. By the method, the problem of pollution-free treatment of leftover material generated in the manufacturing of the lithium-ion batteries for battery manufacturers is solved and meanwhile, a method for mining secondary mineral, namely, a cobalt resource is provided.

The invention discloses a tin reclaiming method for fine-grain and low-grade secondary mineral tailings. The tin reclaiming method comprises the procedures including front hoisting and tailings throwing, fine silt separating, and the like, wherein the procedure of front hoisting and tailings throwing of secondary mineral tailings comprises the steps of primary screening and classification, primary ore grinding and secondary screening and classification; the procedure of fine silt separating comprises the steps of classification and swirler treatment. According to the invention, separated mineral tailings are classified again, and a swirler is used for desliming, so that the equilibrium quantity and the concentration of ore slurry flowing into a fine silt yun tin shaking bed are ensured, separation of tin and silt slag is improved, the defect that in the traditional process, tin separation is complicated and difficult, the degree of dissociation of tin monomer is poor and the recovery rate is low due to low grade of mineral tailings can be overcome, the separating capability of tin separation is improved, the tin concentrate recovery rate of the shaking bed is improved, and reclaiming and cyclic utilization of waste material are realized.

A process to significantly improve the copper chemical leaching process for primary and secondary minerals, using calcium chloride including the agglomeration, curing, and leaching with a high content of chloride, iron and copper stages. The mineral is then washed with a low concentration of copper and a high concentration of acid, where the impregnated copper is extracted from the pit and wherein a recirculated solution is used in the agglomeration stage.

The invention discloses a method for preparing TFT-LCD silicon micro powder through vein quartz tailings. The method comprises the steps of S1, preparing pulp, wherein the quartz tailings are sent into a pulp preparing bucket, and an anion-cation mixed collecting agent and industrial grade H2SO4 are added into the pulp preparing bucket to prepare the pulp; S2, conducting flotation, wherein impurity minerals which floats in the form of foams are removed; S3, agent removing, wherein agent water in mortar after flotation is removed through a screw sand washer; S4, washing, wherein water is added into the mortar after agent removing to be cleaned; S5, dehydrating; S6, drying; S7, magnetic separation, wherein ferromagnetic minerals are further removed; S8, ball grinding and classification, wherein fine sand after treatment in the step S7 is sent into a non-mineral ball grinding machine for mineral grinding, meanwhile, two classifiers are adopted in sequence for classification, coarse sand which is classified by the first classifier and is bigger than 74 micrometers in particle size is returned to the non-mineral ball grinding machine for secondary mineral grinding, fine sand which is classified by the second classifier and is smaller than 45 micrometers in particle size is cut off, and therefore the TFT-LCD silicon micro powder of which the particle size is 45-74 micrometers is obtained.

The invention relates to a method for high-efficiency precipitation of soluble iron in acid mine drainage, belonging to the field of environment engineering technology. The method comprises the following steps: electrolyzing acid mine drainage rich in iron ions at a low voltage and allowing most trivalent iron ions to be reduced into divalent iron ions through gain and loss of electrons; and then oxidizing divalent iron ions by using acidithiobacillus ferrooxidans so as to produce a ferric hydroxysulfate mineral with good settleability and compact particles. After secondary reduction and secondary mineral formation, the total iron precipitation rate is increased to almost 80%. The method promotes removal of soluble iron and does not introduce other chemical components, and the obtained secondary mineral has good settleability. Compared with technology of the same kind, the method provided by the invention is more superior and has the advantages of low cost, safety, reliability, energy conservation and environment friendliness, and moreover, the secondary mineral can be used as an adsorption material for resourceful utilization.

The invention discloses a method for strengthening reduction roasting based on heating cracking of an iron-containing material. The method comprises the following steps of: (1) crushing and grinding the iron-containing material into mineral powder; (2) conveying the mineral powder to a pre-oxidation roasting furnace, heating the mineral powder in a suspension state for pre-oxidation roasting, andthen enabling the mineral powder to enter a cyclone separator; (3) performing discharging into a heat storage reduction roasting furnace through cyclone separation, and carrying out reduction roastingwith reducing gas in a suspension state; (4) conveying the reduced material to a primary cooling cyclone separator, carrying out cyclone separation under a nitrogen atmosphere condition, and performing cooling to 200-300DEG C; (5) feeding the cooled and reduced material into a secondary cooling cyclone separator through a flow sealing valve, carrying out cyclone separation in an air atmosphere, and carrying out reoxidation reaction; and (6) grinding the re-oxidized material to prepare secondary mineral powder; and performing low intensity magnetic separation. According to the method, the reaction active sites of iron minerals are increased, the reaction rate is increased, and the apparent activation energy of the reduction reaction is reduced, so that the reduction effect is enhanced.

The invention provides a method for separation and content determination of clay particles, and relates to the technical field of particle number measurement. The method for separation and content determination of clay particles comprises the following steps of: determining the content X1 of a main mineral phase and the content X2 of a secondary mineral phase in machine-made sandstone powder; dissolving machine-made sandstone powder in the solution to form turbid liquid, and dissolving clay minerals; separating out a solution containing clay minerals by adopting a natural sedimentation method;drying the separated solution; repeating the separation steps for multiple times, and collecting particles separated for multiple times; and quantitatively analyzing the content x2 of the clay minerals, so as to obtain the content (X2x2/100)% of the clay minerals in the machine-made sandstone powder. According to the method, particles smaller than 5 micrometers can be extracted through adopting anatural sedimentation method, meanwhile, the content of the clay minerals processed through a quantitative analysis method is measured, the accuracy degree can reach 80%-90%, and therefore the content of the clay particles in the machine-made sand can be separated and measured more accurately, and misjudgment is not likely to be caused.

The invention discloses a method for controlling mine heavy metal flushing pollution by using a humification product, which comprises the steps of (1) carrying out mixed fermentation on sludge and extreme thermophilic strains to promote generation of polar humification groups, and then carrying out mixed fermentation on the fermented materials and primary substances of humus precursors to induce generation of a large amount of humus, until the humus content reaches the standard requirement; and (2) mixing and maintaining the sludge humification product reaching the standard and the heavy metal polluted mine soil, and repairing the polluted mine. According to the invention, the humification product is used for absorbing and enriching heavy metal polluted on the surface layer of the mine, complexing of copper, cadmium, chromium, lead, nickel, arsenic and zinc can be increased by 20-85%, the remarkable heavy metal absorbing and enriching effect is achieved, after the humification product enriches the heavy metal, the heavy metal is induced to migrate on primary mineral of the mine and mineralized to generate secondary mineral, and free heavy metals are fixed on the primary mineral, so that the problem of heavy metal flushing pollution of the mine is effectively solved.

The invention discloses a concentrating machine which comprises a box and a feeding port; the feeding port is formed on the top on the right side of the box; a baffle plate is connected with the box through a connecting shaft; a plurality of baffle blocks are arranged on the surface of the baffle plate; a spring is arranged on the bottom of a gasket; a gear rack is arranged on the left side of thebaffle plate; a gear is arranged on the left side of the baffle plate; a rotating rod is arranged on the left side of the gear; a bolt is penetrated through the rotating rod; a slide rail is arrangedon the right side of the baffle plate. In the concentrating machine, the baffle plate and the adjustable baffle blocks are arranged at the feeding port, so that a first magnetic separator is capableof more finely screening ores; a conveyor belt is arranged in the box, is used for conveying the waste ores after primary filtering to a second magnetic separation wheel and is capable of achieving the effect of secondary filtering; the baffle plate and the adjustable baffle blocks in the box can solve the problems of inaccurate sorting and serious waste of ores of other concentrating machines; the second magnetic separation wheel is used for performing secondary filtering, so that the defect of secondary mineral separation required by other concentrating machines can be overcome.

The invention discloses a method for rapidly delineating a medium and heavy rare earth prospecting target area in a weathering crust model based on geologic body rare earth partition, and belongs to the technical field of mineral resource exploration. By collecting and analyzing the rare earth element content of the geologic body, the partition rule of the rare earth elements and the main rare earth carrier secondary mineral characteristics, the medium and heavy rare earth prospecting target area is rapidly determined. According to the method, the occurrence state of the rare earth in the weathering crust and the mineralization potential of the medium and heavy rare earth can be rapidly evaluated only by carrying out a small amount of field verification, a large amount of prospecting cost and manpower investment are saved compared with an existing medium and heavy rare earth target area delineation method, and the method has the advantages of being low in cost, accurate in result, high in efficiency and the like.

The invention discloses a process for recovering plumbum and silver from waste slag of metal smelting. The smelting waste slag containing the plumbum and the silver is firstly placed into a combustion furnace for high-temperature combustion, smelted plumbum after purified is cast into an anode, dross generated in the furnace is conveyed into a blast furnace, the anode cast by the plumbum is conveyed into an electrolytic bath for further purification, cathodic plumbum is generated in the electrolytic bath, the cathodic plumbum is refined through an electric plumbum pot, and anode mud generated by the electrolytic bath and added bismuth and antimony are together conveyed into a reverberatory furnace for treatment, waste slag containing silver and zinc is conveyed into a cupellation furnace for smelting, the separation of the silver form other impurities is achieved, and obtained coarse silver or alloy containing the silver flows to the bottom of the cupellation furnace. The process for recovering the plumbum and the silver from the waste slag of metal smelting fully utilizes secondary mineral resources, reduces the waste of resources, improves the comprehensive recovery capacity of valuable metal, and ensures environment protection.

Production of magnetic refrigerating material by ferro-manganese mixture is carried out by taking nano-secondary mineral with nitrate replacement ferro-manganese structure and mixture of Gd3Ga5012, mixing with excess tartaric acid solution, dewatering, heating by high-temperature air and cooling to obtain final product. It's simple, has various raw material sources and no environmental pollution. It can be used as low-yield filed microelement fertilizer and for modifying sand soil.

The invention relates to preparation and application of carbon-coated iron oxide of high-mediation oxalic acid reduced chromium, and belongs to the technical field of environmental materials. The material is prepared by adding polyvinyl alcohol (PVA) for modification on the basis of synthesizing iron-based secondary minerals through iron-oxidizing bacteria, culturing for a period of time, filtering, drying, grinding into powder, finally calcining for 2 hours in an inert gas atmosphere of 700 DEG C, cooling to room temperature, taking out, and introducing nitrogen for sealing. The carbon-coated iron oxide can efficiently mediate oxalic acid (4mM) to realize nearly 100% removal of hexavalent chromium (Cr (VI), 40mg/L) within 90 minutes under the dosage of 0.75 g/L, and shows an excellent Cr (VI) removal effect in a relatively wide pH range, different salt ion concentrations and different water bodies. The carbon-coated iron oxide is wide in raw material source, simple to synthesize, low in cost and capable of being industrially prepared on a large scale, and has the main characteristic that the removal of Cr (VI) can be realized by efficiently mediating oxalic acid within a short time. Therefore, the carbon-coated iron oxide material has a wide application prospect in removal of heavy metal polluted water.

Provided are a high-efficiency filter device and wastewater treatment method for beneficiation wastewater treatment. The filter device comprises a tank body, wherein a material discharge hopper is formed in the lower part of the tank body, a wastewater supply device is arranged at the upper part of the material discharge hopper, and an anti-blocking device is arranged in the middle of the tank body; and the parts, under the anti-blocking device, in the tank body are filled with filter filler composed of secondary mineral, weak soil, collapsible soil and sandy soil, a floating water discharge device is arranged under the anti-blocking device, and the tank body is provided with water drainage pipes, waste liquid discharge pipes and liquid level sensing contacts corresponding to different liquid level positions. When beneficiation wastewater treatment is conducted through the high-efficiency filter device, wastewater is mixed with the filter filler through a water distribution device under the pressure of inlet water, the obtained mixed liquid is raised to the top from bottom to top through the anti-blocking device, and then purified water is discharged through the floating water discharge device; the filtered waste liquid is returned to an adjustment tank, and when the suspended solid content in the discharged purified water does not meet the requirements, filtration stopping andreplacement of the filter filler are conducted; the filter device has even water distribution, and no additional arrangement of a stirring device is needed; and no agglomeration of the filter filleroccurs, the filter filler is not stirred by the water discharge device, and the filter device has a high speed and a good filter effect.