250 results about "Mica" patented technology

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 relates to the field of architectural ceramics, and discloses a tile with a flash and matte composite effect, which sequentially comprises a green body layer, a matte glaze layer, a pattern layer and a flash layer from bottom to top, the glossiness of the matte glaze layer is less than 6GU; the preparation raw materials of the flash layer comprise flash particles, and the flash particles comprise the following components in parts by weight: 60-80 parts of mica titanium pearl powder, 10-20 parts of coating aluminum powder and 5-10 parts of glass beads; and the particle size of the flash particles is 50-250 microns. According to the invention, the matte glaze is combined with the flash particles, the matte glaze provides a soft and convergent substrate, the flash particles form local and bright reflection points on a matte background, and the matte glaze and the flash particles are distinct in contrast and set off each other, so that the matte high-grade texture is kept, and the flexible flash bright points are added; and the complex aesthetic feeling of coexistence of a matte substrate and mineral crystal flash in natural stone is simulated to the greatest extent.

The invention discloses a magnetic separation-flotation combined stepped deep iron removal method for granite tailings. According to the method, after granite tailings are subjected to ore grinding treatment, magnetic separation impurity removal, black and white mica ore removal through reverse flotation and fine ferrodolomite ore removal through reverse flotation are conducted in sequence, after the pH of reverse flotation tailings is adjusted, fluoride-free and acid-free separation is conducted, low-iron quartz concentrate and feldspar rough concentrate are obtained, the feldspar rough concentrate is subjected to regrinding and secondary magnetic separation impurity removal, and the low-iron quartz concentrate and the feldspar rough concentrate are obtained. And low-iron feldspar concentrate is obtained. According to the method, no strong acid is involved in the whole process, the technical problem that in the prior art, strong acid is introduced in quartz and feldspar flotation, and consequently waste water and waste liquid pollution is caused is fundamentally solved, and efficient and deep removal of iron impurities in the granite tailings is achieved through the magnetic separation pre-enrichment-three-section flotation separation-step deep iron removal technology. And the overall removal efficiency of the iron impurities is remarkably improved, and comprehensive utilization of granite tailings resources is achieved.

The invention discloses a multilevel rock mass mechanical analysis method and system based on near field dynamics, and the method comprises the steps: generating a mica-matrix binary model matched with actual granite based on a K-L random field, mapping the model to a BB-PD model mass point through a DIP method, determining the distribution, the particle size and the content of mica, and determining the particle size of the mica; the mechanical weakening effect is simulated by reducing the normal and tangential stiffness of the mica phase, and the microstructure characterization of the rock is completed. Constructing a structural plane PD numerical model by combining the geometrical characteristics of the structural plane reconnaissance on site and the mechanical parameters of the indoor direct shear test, and analyzing the influence of the geometrical and mechanical characteristics of weak planes such as joints and fractures on the local mechanical properties of the rock mass; the method comprises the following steps of: constructing an engineering scale rock mass numerical model integrated with mechanical properties of a microscopic rock block and a microscopic structural surface by relying on field rock mass discontinuous surface distribution data and indoor test basic mechanical parameters, and finishing analysis on the influence of the overall mechanical properties of the engineering scale rock mass; and the problems of insufficient cross-scale collaboration and the like are solved.

The invention relates to a high-reflection-high-emissivity radiation refrigeration coating for power equipment and a preparation method of the high-reflection-high-emissivity radiation refrigeration coating. The coating comprises deionized water, styrene-acrylic emulsion, titanium dioxide, hollow glass beads, zinc oxide, hexacyclic stone powder, a dispersing agent, a defoaming agent, a coalescing agent and a mildew preventive, and mica powder, calcined kaolin, talcum powder, silicon oxide micro powder or block copolymer emulsion can be optionally added. According to the coating, the synergistic effect of various infrared functional fillers and an emulsion matrix is optimized, so that high reflection of sunlight and high emission of middle and far infrared bands are realized. The coating has excellent cooling capacity, self-cleaning performance and environmental adaptability.

The invention discloses a high-purity quartz sand flotation impurity removal process which comprises the following steps: S1, feeding: injecting quartz sand into a flotation machine; s2, carrying out primary flotation in a flotation machine; s3, the flotation machine is emptied for the first time; s4, the quartz sand obtained after primary flotation is injected into the flotation machine again for secondary flotation; and S5, secondary emptying is conducted, and high-purity quartz sand is obtained, in the step S2, primary flotation comprises the following steps that S201, EDI hot water is added into a flotation machine, ventilation is conducted, and the temperature of the EDI hot water ranges from 40 DEG C to 50 DEG C; s202, the flotation machine is started to fully stir the quartz sand, and then the air valve is closed; s203, HF acid is added, and the pH value is adjusted; s204, chemical adding is carried out; according to the high-purity quartz sand flotation impurity removal process, mica, feldspar, iron-containing minerals and the like can be effectively removed, after two times of flotation, internal impurities are obviously reduced, the purity of quartz sand can be greatly improved, and the high-purity quartz sand flotation impurity removal process is integrally simple and easy to control and suitable for application and popularization.

The invention discloses an environment-friendly underwater sound absorption polyurethane composite material and a preparation method thereof, the environment-friendly underwater sound absorption polyurethane composite material comprises a prepolymer, a chain extender and a filler, the prepolymer is a polymer obtained by polymerizing polyether and diphenylmethane diisocyanate, and the NCO value of the polymer is 12-18%; the chain extender takes butanediol as a hard segment and polyether and polyether polyol as soft segments; the environment-friendly polyurethane composite material for underwater sound absorption is a sound absorption material which does not contain ricinoleic acid, oleic acid and linoleic acid, can avoid water body pollution caused by explosive propagation of ricinoleic acid, oleic acid and linoleic acid, is used for replacing an existing sound absorption material, and has the advantages that the environment-friendly polyurethane composite material for underwater sound absorption is good in sound absorption effect and good in sound absorption effect. And water pollution is prevented while sound is absorbed.

The invention discloses a method for preparing machine-made sand from high-mica granite, which comprises the following steps: coarsely crushing and intermediately crushing granite, screening the intermediately crushed product by using a strip-shaped sieve, and finely crushing the oversize product to the required particle size to obtain a finely crushed product; undersize products obtained after screening of the intermediate crushed products are screened are screened into large-sheet-diameter free mica and fine sand through a square hole screen, the fine sand and the fine crushed products are further screened into materials of + 2.5 mm and-2.5 mm, the materials of + 2.5 mm are further screened through a strip-shaped screen, and gravel containing no free mica and sheet-shaped free mica are obtained; the-2.5 mm materials are sorted through a strong magnetic sorting machine, and magnetic material free mica and non-magnetic material free mica-free machine-made sand are obtained; and uniformly mixing the machine-made sand without the free mica with the sandstone without the free mica according to a ratio to obtain a machine-made sand product. The high-mica-content granite can be processed and prepared into the artificial sand with the free mica content smaller than 2%, and the requirements of high-standard building materials are met.

The invention discloses an internally-reinforced impact-resistant mica plate which comprises mica plate sheet units arranged in a stacked mode, and a polyphenylene sulfide fiber membrane is arranged between every two adjacent mica plate sheet units. Each mica sheet unit comprises an inner-layer core plate, the inner-layer core plate is a mica sheet, and a reinforced fiber mesh surface and a reinforced mica layer are formed on the upper surface and the lower surface of the inner-layer core plate after surface acid etching; the reinforced mica layer is obtained by forming mica slurry in which inorganic filler and reinforced fibers are uniformly dispersed through hot-pressing curing treatment; and after the reinforced fiber mesh surface is treated by the coupling agent, the resin material which is the same as that in the mica slurry is used for pre-impregnation treatment in advance. According to the composite mica plate, the overall performance and stability of the mica plate are improved, the mechanical strength and impact resistance of the mica plate are remarkably improved, and a more reliable and efficient insulating material is provided for the fields of electrical equipment, aerospace, automobile manufacturing and the like.

The invention relates to the technical field of polymer composite materials, in particular to a corrosion-resistant composite material for a pin insulator wire fixing device and a preparation method of the corrosion-resistant composite material. 5-10 parts of an ethylene-propylene copolymer elastomer; 2 to 4 parts of maleic anhydride grafted polypropylene; 0.5 to 1 part of polyethylene glycol; 3-5 parts of nano silicon dioxide subjected to surface silanization treatment; 5-10 parts of surface modified mica sheets; 0.5 to 2 parts of fluorinated graphene; 0.2 to 0.5 part of a hindered amine light stabilizer; 0.2 to 0.5 part of a hindered phenol antioxidant; 0.2 to 0.4 part of a benzotriazole ultraviolet light absorber; 0.3 to 0.6 part of metal stearate; the corrosion-resistant coating has the advantages that the corrosion medium permeation is effectively blocked, and the corrosion-resistant coating has excellent corrosion resistance under the corrosion medium in acidic, alkaline and salt mist environments.

The invention provides a preparation method of a flexible HZO ferroelectric memristor based on an all-solution method. The preparation method comprises the steps that S1, a mica sheet is used as a flexible substrate layer after being cleaned; s2, mixing a graphene conductive coating and ethanol according to a mass ratio of 1: 1000, stirring, carrying out ultrasonic treatment, layering graphene to obtain a mixture, uniformly dispensing the obtained mixture on the upper surface of the flexible substrate layer prepared in the S1, and heating and curing to prepare a bottom electrode layer; s3, mixing and stirring HfCl4 powder, ZrCl4 powder, an ethanol solution and deionized water according to a weight ratio of 1: 1: 10: 5, and performing ultrasonic treatment to obtain an HZO precursor solution; spin-coating the HZO precursor solution on the upper surface of the bottom electrode layer, and performing high-temperature annealing to form a nerve bionic layer; and S4, uniformly coating Pt conductive slurry on the upper surface of the nerve bionic layer prepared in the S3, and heating and curing to form the top electrode. The method effectively overcomes the problems of film forming difficulty and ferroelectric crystal structure regulation and control in the prior art, and has the advantages of simplicity, convenience and low cost.

The present invention discloses a mica sheet middle plate winding machine, comprising a pedestal, a table top is provided on the pedestal, a feeding mechanism for providing mica sheet middle plates is provided on the table top, two rotating mechanisms fixedly arranged on the table top and symmetrically positioned to drive the mica sheet middle plates to rotate for winding are provided on the lower side of the feeding mechanism, a wire feeding mechanism fixedly arranged on the table top and used to provide wire materials is provided on one side of the rotating mechanism, the mica sheet middle plates and wire materials are supplied by the feeding mechanism and the wire feeding mechanism, the wire materials are cut and welded to the mica sheet middle plates by the processing mechanism, the wire materials are wound onto the mica sheet middle plates by the rotating mechanism, and the discharging operation of the processed mica sheet middle plates is realized by the discharging mechanism and the transportation mechanism. The whole process can be completed fully automatically, is convenient to use, can greatly save human resources, and improve production efficiency.

The invention provides flaky mineral separation equipment and a separation method thereof. The flaky mineral separation equipment comprises a transmission belt inclining downwards, the upper surface of the transmission belt is in upward transmission, the surface of the transmission belt is a smooth surface, and the transmission belt is a polyurethane transmission belt. Separation of flaky minerals and granular minerals, such as separation of mica sheets and quartz particles, is realized by adopting a dry method, the method is suitable for mineral separation in arid regions, the mineral separation cost is reduced, and the problems of blockage and the like are avoided.

The invention relates to a talcum powder filled polypropylene composite material based on surface modification and process cooperation and an injection molding pocking mark defect inhibition method. The material is composed of co-polypropylene, acidic salt-titanate composite modified talcum powder, flaky mica (5-10 [mu] m), a POE flexibilizer, a zeolite molecular sieve, an MAH-g-PP compatilizer, a zinc stearate dispersant and the like. According to the invention, the three measures of surface modification treatment, formula design and process purification technology are combined, and the problem of pitting defects (surface pits and white spots) generated in the injection molding process of the talcum powder filled polypropylene composite material is mainly solved. Through filler surface modification treatment, formula design and a process purification technology, the hard spot defect rate is reduced by about 85%, and the method is suitable for products with high surface quality requirements, such as automobile bumpers and instrument panels.

The invention belongs to the technical field of talc, and provides a method for detecting fluorescent substances in talc raw ore, which comprises the following steps: S1, carrying out ball milling on the talc raw ore in a ball mill, sieving to obtain sieved powder, and adding deionized water into the sieved powder to obtain slurry; s2, adding the slurry into the mixture to enable the pH value of the slurry to be 5, stirring, and standing in a water bath for 2-3 hours to obtain a first precipitate; s3, adding a thiourea-ascorbic acid solution into the first precipitate to obtain a second precipitate; and S4, carrying out secondary ball milling on the second precipitate, and spreading the second precipitate in an enamel plate to detect whether the talc raw ore contains the fluorescent substances or not. The hydrochloric acid can dissolve quartz and mica to avoid generation of background fluorescence or quenching effect, and the nonionic surfactant polyethylene glycol can be adsorbed on the surface of the mineral to reduce interfacial tension, so that the hydrochloric acid is easier to infiltrate tiny pores, the pit defect caused by local over-corrosion is reduced, the pickling uniformity is improved, and the detection sensitivity is improved.

The application relates to the technical field of insulating materials, and particularly discloses a mica material composition, a mica tube and a preparation method and application thereof. The mica material composition provided by the application comprises the following components in parts by weight: 75-85 parts of mica powder, 35-55 parts of polyethylene, 45-55 parts of silicon powder and 25-35 parts of organic silica gel; the application also provides a mica tube prepared by using the mica material composition, and a preparation method of the mica tube, which comprises the following steps: extruding the mica material composition at an extrusion temperature of 170-190 DEG C, and then air-cooling at 20-30 DEG C for greater than or equal to 20 min to obtain a mica tube preform; and through drying, the mica tube is obtained. The mica tube is prepared by extruding the mica material composition, the mica tube is seamless, the mica tube has good insulation at room temperature and good high-temperature fire resistance, and can meet the use requirements of an electric shock rod or a waterproof sleeve tube insulating layer.

The application discloses a kind of high-iron infrastructure special artificial crystal mica large sheet preparation equipment, it is characterized in that, it includes pedestal body, melt furnace being installed above pedestal body, heating body and graphite mould being installed at melt furnace central axis, the top of the melt furnace is provided with feed inlet;The base and the bottom of the melt furnace are filled with filler, the bottom of the graphite mould is buried in the filler, and the upper part of the graphite mould is above the filler;The graphite mould is connected by upper body and lower body and is composed, and the upper body and the lower body are communicated by connecting hole. The equipment can prepare 10-60cm 2 size mica large sheet.

The utility model relates to the technical field of mica sheet screening, and provides a mica sheet grading and screening device which comprises a dismounting guide plate, a dismounting clamping block is fixedly installed in the dismounting guide plate, a lifting and dropping rack fixedly installed with a screening support is arranged below a multi-stage screening rack, and a lifting and dropping rack is arranged below the multi-stage screening rack. A folding guide plate is rotationally connected to the interior of the lifting and falling rack; the assembling and disassembling guide plate is arranged in the screening support, mica sheets screened out by the multi-stage screening frame are guided through the assembling and disassembling guide plate, the mica sheets slide downwards along the assembling and disassembling guide plate, and meanwhile the lifting and falling frame capable of being adjusted is arranged below the multi-stage screening frame. The lifting and falling material frame drives the folding material guide plate to stretch and deform in the adjusting process, the inclination angle of the folding material guide plate is adjusted, the folding material guide plate is used for guiding the screened mica sheets to slide downwards, direct falling and collision of the mica sheets are avoided, and the screening safety of the mica sheets is improved.

The application relates to the technical field of fire-resistant cables, and particularly discloses a high-flame-retardant high-fire-resistant cable which is composed of a conductor, an insulation layer formed of magnesium oxide particles and an outer sheath, a spiral cavity is arranged between the conductor and the outer sheath, the spiral cavity is formed of at least one spiral-wound insulation belt, the magnesium oxide particles are filled in the spiral cavity and compacted, the insulation belt is a high-temperature-resistant flexible mica belt, the mica belt is composed of synthetic mica paper or phlogopite paper and alkali-free glass fiber cloth, the spiral cavity formed by the spiral-wound composite mica belt limits the displacement of the magnesium oxide particles, the inclined winding of the insulation belt constructs a support system which is stable in structure and uniform in pressure distribution, the anti-deformation capacity of the insulation layer under dynamic mechanical stress is greatly improved, the integrity of the insulation medium is effectively ensured, and the technical problem that the magnesium oxide layer in a traditional mineral-insulated cable is easy to loosen is effectively solved.

The application discloses a kind of jade color seepage luxury stone effect ceramic rock plate and preparation method thereof, the ceramic rock plate includes body, transparent face glaze layer, jade texture pattern layer, composite dry particle layer, first protective glaze layer, transparent dry particle layer and second protective glaze layer in turn from bottom to top;The raw material components of preparation composite dry particle layer include seepage color dry particle and transmittance dry particle, and the raw material components of seepage color dry particle include by weight 65-69 parts of zircon, 5-7 parts of lithium mica, 10-15 parts of opal, 3-5 parts of kyanite and 1-5 parts of calcium-aluminium garnet;The raw material components of transmittance dry particle include by weight 20-25 parts of sodium feldspar, 25-30 parts of quartz, 14-16 parts of calcite, 8-12 parts of wollastonite and 13.5-15.5 parts of zinc oxide.The ceramic rock plate can truly restore the randomness, level and multicolor interweaving effect of jade color seepage, improve the warm and moist texture and natural luster of product surface, realize the luxury stone effect of jade color seepage.

This invention discloses a composite transparent film and its preparation method, relating to the technical field of polymer materials. The preparation method of the composite transparent film includes the following steps: (1) melting and blending vermiculite and fluororubber to obtain fluorinated vermiculite; then mixing the fluorinated vermiculite and mica evenly to obtain composite clay; (2) mixing polyvinyl alcohol solution, composite clay, and SESC lignin evenly to obtain a precursor solution, wherein the mass ratio of polyvinyl alcohol, composite clay, and SESC lignin is 45:45:(8-12); then spreading and drying the precursor solution on a substrate by casting, followed by heat treatment to obtain the composite transparent film. The composite transparent film of this invention possesses excellent water vapor barrier properties, ultraviolet absorption capacity, good transparency, high mechanical strength, and weather resistance.

The application discloses a white granite type high-purity quartz purity prediction method and application thereof, and belongs to the technical field of rock purity prediction. The prediction method encodes and assigns one or more prediction parameters, such as main mica types, rock structures, rock structures, feldspar types, quartz types, solid inclusions, liquid inclusions, solid inclusion quantity, aluminum impurity element content grading, titanium and lithium element content grading, calcium and phosphorus element content grading, potassium and sodium element content grading and grain factor grading, and then predicts the quartz purity in the ore based on a random forest classifier prediction model or a support vector machine prediction model. The comparison between the actual measurement and the prediction result proves that the prediction method has accurate and reliable prediction results, realizes the replacement of manual detection by artificial intelligence prediction, greatly reduces the manpower and material resources, and provides an efficient and accurate prediction method for quartz purity prediction.

There is provided a photothermal material, comprising a plurality of layers of two-dimensional phyllosilicate intercalated with a liquid metal. In a particular embodiment, the phyllosilicate is mica and the liquid metal is gallium.

A method for producing a geopolymer foam, comprising obtaining a reaction slurry containing aluminosilicate, alkali metal silicate, aggregate, and water, adding a foaming agent to the reaction slurry to form a foaming slurry, and heating the foaming slurry, wherein the aggregate used is mica with an average particle size of 50 to 500 μm and a volume fraction (X) of particles with a particle size of 10 μm or less of 3% or less, and wherein the viscosity of the reaction slurry at 23° C. is 3000 to 15000 mPa·s.

The invention discloses a method for recovering fine-crushed gold-loaded resin from gold ore leaching residues, and belongs to the technical field of mineral processing. The invention provides an efficient recovery method aiming at the problem of resource waste caused by loss of fine-crushed gold-loaded resin along with leaching residues in the gold extraction process of a resin ore pulp method. The gold ore tailings mainly comprise silicate minerals such as quartz, feldspar and mica, the granularity is fine, and the viscosity of ore pulp is high. The method comprises the following steps: carrying out size mixing and dispersion pretreatment on the tailings containing the fine-crushed gold-loaded resin; gold-bearing resin rough concentrate is obtained through screening and grading; the rough concentrate is subjected to desliming pretreatment; the deslimed materials are subjected to dense medium separation and concentration, and efficient separation is achieved through the density difference between resin and gangue minerals; and finally, the obtained gold-bearing resin concentrate is subjected to medium drainage washing. The sorting technology adopted by the invention has the advantages of high separation precision, strong adaptability and the like, can realize efficient recovery of fine-crushed gold-loaded resin from a complex tailing system, and has remarkable economic benefits and environmental benefits.

The invention belongs to the technical field of flame-retardant materials, and particularly relates to a modified mica sheet flame retardant and a hollow glass bead lightweight flame-retardant material. The modified mica sheet flame retardant provided by the invention comprises a mica sheet and nano hydroxide loaded on the mica sheet. Hydroxides are heated and decomposed to absorb a large amount of heat, the combustion temperature is reduced, the hydroxides are decomposed to generate oxides at a higher temperature, nano hydroxides are loaded on the mica sheets, the dispersion uniformity of the mica sheets in a matrix material is improved, the compatibility of the mica sheets and the matrix material is improved, and meanwhile after the mica sheets loaded with the hydroxides expand, the flame retardance of the mica sheets is improved. And larger-volume flame-retardant layer protection can be generated, so that the capability of blocking heat transfer is greatly improved, and the flame-retardant property is further improved.

The polyamide composition is prepared from the following components in parts by weight: 70 parts of polyamide resin, 20 to 40 parts of needle-like wollastonite and mica powder and 0.5 to 3 parts of silane coupling agent, wherein the weight ratio of the needle-like wollastonite to the mica powder is (0.4-2.2): 1, the particle size of the needle-like wollastonite is 570-1600 meshes, and the particle size of the mica powder is 180-850 meshes. The needle-shaped wollastonite and the mica powder are compounded, so that the binding force at a welding part during injection molding can be effectively improved, the strength of a welding mark is further improved, and meanwhile, warping can be improved.

The invention discloses a process for directly purifying quartz sand through gravity-flotation combined separation, and belongs to the technical field of deep processing of non-metallic ores. An existing acid leaching-roasting method is large in pollution and high in cost, and impurities such as Fe, Ti and Al are difficult to remove at the same time through single reselection or flotation. The method comprises the following steps: firstly, crushing raw ore, performing rod milling, and classifying by a cyclone until d90 is equal to 0.15 mm; then combined reselection is conducted through a two-section table concentrator and a centrifugal machine, pre-enriched concentrate with SiO2 larger than or equal to 99.2% is obtained, and the heavy mineral removal rate is larger than or equal to 65%; then, under different pH conditions, lauric acid, a neutral oil emulsified collecting agent and a mixed amine collecting agent are used for collecting mica and feldspar in a segmented mode, so that the grade of SiO2 is increased to be larger than or equal to 99.9%, and Al2O3 and Fe2O3 are reduced to be larger than or equal to 85% and larger than or equal to 70% relative to gravity concentrate; finally, deionized water washing and vacuum drying are conducted, and the high-purity quartz sand is obtained. The whole process is free of hydrofluoric acid and high-temperature roasting, the recovery rate of SiO2 with the size fraction of-0.6 + 0.1 mm is increased to 93-95%, product indexes are stable, equipment is conventional, and industrial popularization is easy.

The utility model provides a mica ore shot blasting crusher, and belongs to the technical field of mica processing equipment. Comprising a mounting shaft transversely fixed to a rack, a rotary drum rotationally connected to the mounting shaft and a separation rod located in the rotary drum, the rotary drum is driven by a driving mechanism to rotate, the separation rod is fixed to the mounting shaft and attached to the inner wall of the rotary drum above the axis of the mounting shaft, and a plurality of permanent magnet strips are arranged on the outer wall face of the rotary drum at intervals; and a plurality of iron impact balls are arranged in the rotary drum. The device has the advantages of small dust pollution and the like.

The utility model relates to the field of composite mica coil material edge covering equipment, in particular to full-automatic edge covering equipment for a mica coil composite material. The utility model relates to full-automatic edge covering equipment for a mica coil composite material, which comprises a screw extruder, a mica coil unwinding roller group, a transmission roller group, a multi-section type drying oven and a winding roller group, wherein the mica coil unwinding roller group is positioned at the upstream of the screw extruder, and the transmission roller group, the multi-section type drying oven and the winding roller group are sequentially positioned at the downstream of the screw extruder; a channel for conveying a mica roll composite material is integrally formed in the edge covering die head; a plurality of extrusion runners are integrally formed in the edge covering die head, and outlets of the extrusion runners are formed in the channel outlet in a surrounding mode. The full-automatic edge covering equipment for the mica roll composite material is used for covering the edge of the mica roll composite material, secondary cutting and trimming are not needed, generation of cut plastic film waste is effectively reduced, generation of industrial waste is reduced, the resource utilization rate is increased, and the edge covering cost of the mica roll composite material is reduced.