299 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 discloses a comprehensive utilization process for kaolin tailings. The comprehensive utilization process comprises the following steps: scrubbing the kaolin tailings; the scrubbed kaolin slurry is sieved by a 5mm linear sieve, waste rocks of + 5mm are used as sand-gravel materials, and the waste rocks of-5mm are classified into 2-5mm, 0.1-2mm and-0.1 mm; the method comprises the following steps: grinding and grading ore with the particle size of 2-5mm, returning and regrinding the ore with the particle size of + 0.6 mm, removing tail mud with the particle size of-0.045 mm by grading the ore with the particle size of-0.6 mm, carrying out magnetic separation on the ore with the particle size of 0.045-0.6 mm, carrying out 1-2 sections of strong magnetic separation on the obtained magnetic separation concentrate to obtain strong magnetic concentrate, heating, adding chemicals, scrubbing, and carrying out chemical removal, desliming and washing to obtain primary photovoltaic glass sand and graded fine sand; the method comprises the following steps of: grinding and screening the ore with the particle size of 0.1-2mm, grinding and screening the ore with the particle size of + 0.6 mm until the ore with the particle size of-0.6 mm is completely ground, carrying out spiral chute reselection on the ore with the particle size of-0.6 mm to obtain heavy ore and light ore, carrying out 2-3 sections of magnetic separation on the light ore to obtain magnetic concentrate, carrying out flotation to obtain mica, carrying out graded desliming on the product in a flotation tank, and carrying out graded fine sand with the particle size of-0.1 mm; carrying out heating, chemical adding and scrubbing at the particle size of 0.1-0.6 mm, and then carrying out chemical removal, desliming and washing to obtain secondary photovoltaic glass sand; the yield of the obtained product is higher, and the product index is better.

The invention discloses a mica material production optimization method and system based on big data analysis, and relates to the field of mica production technologies, and the method comprises the steps: obtaining a mica processing product type and a historical mica processing product type; acquiring initial equipment parameters of all mica processing equipment; acquiring mica processing data and mica historical processing data according to multiple types of sensors preset in mica processing equipment; screening out core process parameters in the initial equipment parameters; calculating a core process standard value corresponding to the core process parameter; calculating the loss rate of the mica raw material in the mica processing process; screening and outputting local correction factors and global correction factors; and correcting the initial equipment parameters to obtain optimal equipment parameters. The mica processing technology is optimized, and the utilization rate of mica processing raw materials and the quality of mica processing products are improved.

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 utility model provides a high-safety resistor which comprises a shell (1), a resistor core (2) is arranged in the shell (1), a mica shell (3) is arranged outside the resistor core (2), quartz sand is filled in the mica shell (3), a leading-out sheet (4) is inserted on the mica shell (3), one end of the leading-out sheet (4) is connected and matched with the resistor core (2), and a group of limiting salient points (5) which are in limiting fit with the mica shell (3) are arranged in the shell (1). And a potting layer (6) covering one end of the mica shell (3) is arranged in the shell (1). The insulating resistor is simple in structure and convenient to produce, the insulating property of the resistor is improved, and the working stability and safety of the resistor are effectively improved in order to improve the structural stability and shock resistance.

The invention discloses a method for removing mica from granite machine-made sand, which comprises the following steps: S1, screening and grading semi-finished machine-made sand to obtain coarse sand and fine sand; s2, the coarse sand is subjected to winnowing to remove flaky mica, and a heavy product and a light product are obtained; s3, fine mica with weak magnetism is removed from the fine sand through high-gradient wet magnetic separation, and a non-magnetic product and a magnetic product are obtained; s4, combining the heavy product with the non-magnetic product to obtain the mica content lt; and 2% of full-size machine-made sand. According to the method and system for removing mica from granite machine-made sand, the coarse material and the fine material are screened firstly, then through coarse material winnowing and fine material magnetic separation, the mica content in the whole size fraction of the machine-made sand can be effectively reduced, and the requirement that the mica content is smaller than or equal to 2% in the national standard and the industrial standard is met; and the mica is rubbed before screening, so that the mica is fully separated from sand and gravel materials, adhesion is avoided, subsequent screening can be facilitated, and the screening effect and the quality of screened finished products are guaranteed.

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 provides a method for preparing 4N8-grade high-purity quartz sand through pegmatite high-pressure roller milling flotation, and belongs to the technical field of quartz purification processes. Crushing the quartz raw ore subjected to color sorting into quartz sand with qualified particle size, and carrying out screening and dry magnetic separation; mixing the quartz sand with qualified particle size after magnetic separation with water to form ore pulp, and then carrying out flotation; adding a first collecting agent into the ore pulp in the first flotation to remove mica; in the second flotation, a second collecting agent is added into the first flotation tailings, and feldspar is removed; and in the third flotation, a third collecting agent is added into the second flotation tailings, metal impurities are removed, and a final high-purity quartz sand product is obtained. Visible impurities are rapidly removed through the color sorter, ore is efficiently crushed into fine sand through the high-pressure roller mill, and the remarkable monomer dissociation effect is achieved; a novel flotation impurity removal system is developed, and the method is suitable for large-scale production and purification of high-purity quartz sand.

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 provides a mica nanosheet as well as a preparation method and application thereof, and relates to the technical field of nano material preparation. According to the preparation method of the mica nanosheet, the mica, the ionic liquid and the solvent are mixed and then subjected to ultrasonic treatment, and the large-size ultrathin mica nanosheet is obtained. According to the method, the ionic liquid is used as an intercalation agent and is intercalated between mica sheet layers, so that the distance between the mica sheet layers is enlarged, the interaction force between the mica sheet layers is weakened, the mica nanosheet subjected to ultrasonic treatment is easier to strip, lattice defects are not prone to being generated in the stripping process of the mica nanosheet, and the service life of the mica nanosheet is prolonged. The prepared mica nanosheet is high in quality, few in defect, low in impurity content and good in dispersity, can be used as a barrier functional filler of a heat-conducting sheet, a heat-conducting composite material, polyester or an anticorrosive coating, and has a good application prospect.

The invention relates to the technical field of mica, and particularly discloses a preparation method of low-cost artificially synthesized pyrophyllite-based mica. The preparation method of the pyrophyllite-based mica comprises the following steps: mixing pyrophyllite tailings and a sulfuric acid solution in an autoclave, sealing, stirring, cooling and filtering to obtain impurity-removed pyrophyllite; urea and aluminum nitrate are added into dimethyl sulfoxide, stirring is performed, impurity-removed pyrophyllite is added, sealing is performed, constant-temperature water bath stirring is performed, cooling, calcining and heat preservation are performed, and cooling is performed to obtain modified pyrophyllite; and mixing the modified pyrophyllite, fused magnesite, potassium fluosilicate and potassium carbonate, carrying out ball milling, calcining, carrying out heat preservation, cooling at a cooling rate of 2-4 DEG C / min, calcining, carrying out heat preservation, and grinding to obtain the pyrophyllite-based mica. The pyrophyllite-based mica prepared by the method is high in strength, low in cost and suitable for large-scale popularization and application.

A mechanochemically activated material obtainable by a process for the mechanochemical activation of kaolinite-poor starting materials, the process comprising the following steps: a) providing a solid starting material comprising a phyllosilicate mineral, the starting material having a kaolinite content of less than 50 wt% as determined by XRD, preferably less than 20 wt%, more preferably less than 10 wt%; b) providing a gas; c) introducing the feedstock and the gas into a mechanical agitation unit; and d) subjecting the starting material to mechanical agitation in the presence of the gas in the mechanical agitation unit; wherein the phyllosilicate mineral is selected from the kaolinite group, serpentinite group, mica group, chlorite group and combinations thereof, wherein the mechanochemically activated material has a Strength Activity Index (SAI) at Day 28 of at least 110%, the SAI being determined in accordance with ASTM C311 / C311 M-22.

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 relates to a composite resistance reducing agent and a preparation method and application thereof, and belongs to the technical field of grounding materials of electric power protection systems. The composite resistance reducing agent provided by the invention is prepared from the following components in parts by weight: 20 to 40 parts of bentonite, 20 to 30 parts of conductive cement, 20 to 30 parts of graphite and 5 to 15 parts of conductive mica powder. The bentonite, the conductive cement, the graphite and the conductive mica powder are reasonably compounded, so that the composite resistance reducing agent has good water absorption and water retention, the lower resistivity of the resistance reducing agent is kept for a long time, meanwhile, the composite resistance reducing agent can well permeate and diffuse into surrounding soil, and long-term stable work of the composite resistance reducing agent can also be guaranteed in different climatic environments. The composite resistance reducing agent does not contain inorganic salt, does not corrode various electrode materials, is non-toxic and does not have negative influence on the surrounding environment.

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 invention discloses silver foil dry granular glaze, a ceramic tile with a silver foil decorative effect and a preparation method of the ceramic tile, and belongs to the technical field of ceramic production processes. Wherein mica sheet particles are introduced into the silver foil dry granular glaze, and the mica sheet particles are properly compounded by using silver foil coating base slurry, so that the silver foil dry granular glaze is prepared, the firing temperature of the mica sheet particles is greatly increased, and the original shape of the mica sheet particles is kept unchanged at the high temperature of 1180-1220 DEG C; in addition, the process formula is optimized, so that the formula composition of the silver foil dry granular glaze directly affects the metal flash effect of a product, the silver foil flash effect is met, and meanwhile, the problem of high-temperature adaptation of the silver foil dry granular glaze, matte dry granular glaze, ground glaze and the like is solved.

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 present invention belongs to the technical field of polymer materials, and specifically discloses a coating, a preparation method and application thereof, and a coated product. The raw material components of the coating of the present invention include: 30 to 105 parts of epoxy resin, 1 to 100 parts of a curing agent composition, and 0.3 to 100 parts of a flaky filler composition; wherein the flaky filler composition includes flaky mica powder, flaky glass flakes, and flaky andalusite. The present invention modifies the coating by adding flaky fillers, and a laminated structure can be formed in the coating, thereby improving the barrier and shielding capabilities of the coating, and further optimizing the formula of the flaky filler component, so as to achieve the effect of enhancing the water resistance, heat resistance, corrosion resistance, and extending the service life of the epoxy resin coating; the anti-corrosion coating and coated product prepared by the coating have the characteristics of high coating density, strong anti-permeability, and high heat resistance, and can meet the application requirements in harsh environments such as high humidity and heat, acid and alkali corrosion.

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.