69results about How to "Increase the amount of charge" patented technology

The invention relates to the technical field of ingot casting of solar energy batteries, in particular to a production method of a large polycrystalline ingot. Silicon nitride and water are mixed uniformly through electric mixing for 15-30 minutes, and the mixture is used as a coating liquid, the coating liquid is uniformly coated on the inner surface of a crucible after the crucible is preheated, and then high-temperature baking is carried out on the crucible, a silicon material is loaded in the baked crucible, and then charging is carried out on the crucible loaded with the silicon material, shielding gas-argon passes through a polycrystalline furnace after vacuumizing is carried out on the polycrystalline furnace, the polycrystalline furnace is heated to melt the silicon material, and then, the melted silicon material is gradually crystallized from the bottom part to the top part through directional solidification, and then discharging is carried out after gradual cooling is carried out through high-temperature annealing, the crucible is disassembled after the discharged polycrystalline ingot is cooled at room temperature, so as to obtain the polycrystalline silicon ingot which is sliced to prepare the battery. The large charging amount is realized, the capacity of the casting ingot is improved, the utilization rate of the polycrystalline ingot is improved, the cost is reduced, the requirements of a high-load slicer are met, and the crystal quality is kept to be unchanged.

The invention discloses a VGF / VB gallium arsenide single-crystal furnace structure and a growing method. According to the VGF / VB gallium arsenide single-crystal furnace structure, a resistance heatingfurnace which is relatively lowest in production cost and is provided with multiple temperature zones is adopted; a support structure adopts graphite; the support strength is improved; the loading amount is favorably increased; release of latent heat of growth crystallization is facilitated; the crystal yield of crystal growth is favorably improved; a sealing structure with a reusable quartz tubeand a stainless steel flange is adopted; a 1-atm air charging and discharging automatic valve is additionally arranged on an air channel pipeline, so that the balance of inner air pressure and outerair pressure of the quartz tube can be effectively guaranteed, and the influence of deformation of the quartz tube on reuse is avoided. A VGF method and a VB method are used for growing crystals; whenthe crystals are grown by the VB method, the sunken degree of a concave solid-liquid interface of the VGF growth method can be improved, so that the crystal yield is favorably improved. The single-crystal furnace and the growth method are used for growing the gallium arsenide single crystals with maximum size of 8 inches; meanwhile, the quartz tube can be reused, so that the production cost can be reduced; a CO atmosphere doping manner also can be used for controlling the resistivity and the axial resistivity uniformity of semi-insulating gallium arsenide.

The invention discloses a method for performing anti-wear treatment on a hopper of a loading machine, which comprises the following steps: using a low-carbon steel or low-alloy steel plate as a base plate, selecting a build-up welding flux-cored soldering wire of which the diameter is between 2.0 and 4.0 millimeters special for the hopper of the loading machine, and welding a wear-resisting layer of which the thickness is between 3.5 and 8.0 millimeters on the base plate by adopting a visible arc build-up welding or gas coverage build-up welding process to prepare a wear-resisting composite steel plate; by adopting a plasma cutting device, cutting out a left wear-resisting plate and a right wear-resisting plate in a right trapezoid shape respectively, a middle wear-resisting plate in an isosceles trapezoid shape, and two bottom plates in isosceles trapezoid shapes on the wear-resisting composite steel plate; leveling the plates; and putting the cut wear-resisting layers of the left wear-resisting plate, the middle wear-resisting plate, the two bottom plates and the right wear-resisting plate outwards, and welding the wear-resisting layers on the outside surface of the hopper bottom of the main cutting board side of the hopper respectively through gas shielded arc welding or welding rod arc welding so that the wear-resisting layers are integrated with the original hopper bottom into a whole. After the treatment by the method, the service life of the hopper is greatly improved, the frequent maintenances are avoided, the working efficiency of the loading machine is improved, and steel materials are saved.

The invention provides a production method of chrome carbide powder, which particularly comprises the steps as follows: smashing metal chrome into metal chrome powder; evenly mixing the metal chrome powder with carbon according to the weight ratio of (76 to 91%): (24 to 9%), adding 0-3% of agglomerant into the mixture according to the weight ratio, and pressing to be formed after evenly mixing; putting dried and formed lump materials in a high-temperature vacuum furnace, vacuumizing, rising the temperature when the vacuum degree reaches 5-40 Pa for 6-12 hours, rising the temperature to1200-1400 DEG C, preserving the temperature for 1-5 hours, keeping the vacuum degree within the range of 20-100 Pa, rising the temperature to 1400-1800 DEG C for 2-8 hours, preserving the temperature for 1-5 hours, keeping the vacuum degree within the range of 20-100 Pa, powering off and reducing the temperature after preserving the temperature, stopping vacuumizing, charging argon into the furnace, and discharging chrome carbide agglomerates out of the furnace when the pressure in the furnace is 0.05-0.1MPa, and the temperature is reduced to 80 DEG C; and smashing the chrome carbide agglomerates to obtain the chrome carbide powder.

The invention relates to smelting equipment, especially to an integrated mechanical automation machine for pneumatic packing of furnace charge pellets in a magnesium metal reduction tank and for pneumatic raking of high temperature reducing slag in the tank. The machine is applicable to pneumatic packing of furnace charge pellets and pneumatic raking of reducing slag for a ferrosilicon-process semi-continuous magnesium-smelting external heating type transverse tank. The machine is characterized in that high-flow high-pressure air flow of a Roots blower is used as material conveying power, all the units are mounted on a main running gear which walks in virtue of motor-driven rollers, and a machine body which is controlled by a hydraulic mechanism and can vertically rise and fall and a transverse running gear are arranged on a frame. An air supplying and material conveying pipeline is delivered to the reduction tank through a main drive mechanism on the machine body, reducing slag and pellet furnace charge are introduced into the air supplying and material conveying pipeline at different times and discharged from the reduction tank in virtue of the high-pressure air flow of the Roots blower, and produced dust is collected and cleaned. The machine has a high degree of automation and can both thoroughly remove reducing slag in the tank and intactly pack pellet furnace charge.

The invention provides a formulation and technology of medium-high-alumina ceramic balls. The medium-high-alumina ceramic balls comprise the following raw materials in percentage by mass: dolomite, barium carbonate, bauxite, chinastone and calcined fossil; the technology comprises the steps of wet grinding for twice, precipitating for twice, adding a binding agent for uniformly mixing and firing, so as to obtain the medium-high-alumina ceramic balls. With the adoption of the medium-high-alumina ceramic balls prepared by using the formulation and technology provided by the invention, the defects that the conventional medium-alumina ceramic balls and medium-high-alumina ceramic balls are relatively low in bulk density, higher in abrasion loss, lower in hardness, and not pure enough in color and luster, and the using function loss of the medium-high-alumina ceramic balls reaches or is close to the using function standard of high-alumina ceramic balls.

The invention discloses a method for rapidly dissolving copper. The method comprises the steps of adding solid copper to a copper dissolving tank through a copper material feeding inlet, wherein the material stacking thickness enables air to pass through smoothly; after the material is completely added, sealing the feeding inlet; starting a circulating pump, and adding a dissolving solution to thecopper dissolving tank 1 through a dissolving solution inlet; and starting heating equipment, heating the dissolving solution to 50-65 degrees centigrade, adding compressed air to the copper dissolving tank 1, adding an SO2 gas through an SO2 gas inlet, comprehensively adjusting reaction parameters, and dissolving copper rapidly to generate CuSO4. When the concentration of Cu<2+> in the solutionexceeds or is equal to 100 g / L, the reaction is stopped, Cu<2+> is discharged through a dissolving solution discharge port of the copper dissolving tank, the qualified copper sulfate solution is discharged through a dissolving solution outlet, and the exhaust gas is discharged through an air outlet. According to the method for rapidly dissolving copper disclosed by the invention, the copper dissolving rate is high, the utilization rate of oxygen in air reaches 80%, the inflated air amount is greatly reduced, the evaporation amount of the dissolving solution is reduced by about 30%, and the copper dissolving capacity can reach 800 kg / m<3>.d.

The invention relates to a method for directly reducing materials by using a rotary hearth furnace, and belongs to the technical field of direct reduction by using the rotary hearth furnace. The method for directly reducing the materials by using the rotary hearth furnace solves the problems that the powdery materials have to be agglomerated when existing rotary hearth furnaces are used for reduction and the existing rotary hearth furnaces depend on gas with a high heating value. The method includes the following steps that step 1, the various materials loaded into silos are mixed to form a mixture, and the mixture is conveyed to a bottom plate of a ring-shaped rotating furnace bottom; step 2, combustion-supporting gas is supplied to the bottom plate of the ring-shaped rotary hearth furnace through an air supply unit; step 3, after an air blower is ignited, as the ring-shaped rotating furnace bottom rotates one circle, the mixture on the bottom plate undergoes physical and chemical reactions, and the roasted mixture is discharged from the rotary hearth furnace through a material shoveling device and a spiral discharger. According to the method for directly reducing the materials byusing the rotary hearth furnace, the reduction of the powdery materials directly into the furnace is realized and the rotary hearth furnaces get rid of the dependence on the gas with the high heatingvalue.

The invention provides a sludge squeezer with distributed squeezing units, relates to the technical field of sludge dewatering, and aims to solve the problems of single structure, low dewatering speed and poor dewatering effect of an existing sludge filter press. Comprising a lower platform, multiple sets of stand columns are installed on the lower platform, a movable beam is installed on the multiple sets of stand columns, a squeezing unit is arranged in the movable beam in a penetrating mode, the stand columns are further sleeved with a fixed beam, and the upper end and the lower end of the fixed beam are fixedly connected with adjusting nuts. The fixed beam is located above the movable beam, a working space is reserved between the fixed beam and the movable beam, a squeezing hydraulic cylinder is installed on the fixed beam, the round hole is formed in the side wall of the filter cylinder and used for draining water, and compared with a membrane filter press which is only provided with a water draining hole in a filter plate at the end of the filter cylinder, the water draining efficiency is greatly improved; in the sludge squeezing process, filtrate can be discharged without hindrance when reaching the side wall of the filter cylinder through the mud cake interlayer channel, so that the difficulty of filtrate discharge is reduced.

The invention relates to the technical field of ingot casting of solar energy batteries, in particular to a production method of a large polycrystalline ingot. Silicon nitride and water are mixed uniformly through electric mixing for 15-30 minutes, and the mixture is used as a coating liquid, the coating liquid is uniformly coated on the inner surface of a crucible after the crucible is preheated, and then high-temperature baking is carried out on the crucible, a silicon material is loaded in the baked crucible, and then charging is carried out on the crucible loaded with the silicon material, shielding gas-argon passes through a polycrystalline furnace after vacuumizing is carried out on the polycrystalline furnace, the polycrystalline furnace is heated to melt the silicon material, and then, the melted silicon material is gradually crystallized from the bottom part to the top part through directional solidification, and then discharging is carried out after gradual cooling is carried out through high-temperature annealing, the crucible is disassembled after the discharged polycrystalline ingot is cooled at room temperature, so as to obtain the polycrystalline silicon ingot whichis sliced to prepare the battery. The large charging amount is realized, the capacity of the casting ingot is improved, the utilization rate of the polycrystalline ingot is improved, the cost is reduced, the requirements of a high-load slicer are met, and the crystal quality is kept to be unchanged.

The present invention discloses a separation method for high-content omega-3 fatty acid ethyl ester from ethyl ester type crude fish oil. According to a method in the prior art, the dissolved amount of a raw material in a non-polar solvent is small, so that the charge amount of the raw material in a reaction is small, the production efficiency is low, and the production cost is high. According to the method of the present invention, a polar solvent is used as a raw material solvent, a non-polar solvent is used as a detergent, and a solvent that is the same as the raw material solution is used as an extractant in an extraction section; and according to a liquid-liquid extraction principle, by adopting multistage countercurrent technology, high-purity omega-3 fatty acid ethyl ester is prepared and purified from fish oil with different purity levels of omega-3 fatty acid ethyl ester. The method disclosed by the present invention is simple in operation, small in three-waste discharge and easy for industrial production.

The invention discloses a method for performing anti-wear treatment on a hopper of a loading machine, which comprises the following steps: using a low-carbon steel or low-alloy steel plate as a base plate, selecting a build-up welding flux-cored soldering wire of which the diameter is between 2.0 and 4.0 millimeters special for the hopper of the loading machine, and welding a wear-resisting layerof which the thickness is between 3.5 and 8.0 millimeters on the base plate by adopting a visible arc build-up welding or gas coverage build-up welding process to prepare a wear-resisting composite steel plate; by adopting a plasma cutting device, cutting out a left wear-resisting plate and a right wear-resisting plate in a right trapezoid shape respectively, a middle wear-resisting plate in an isosceles trapezoid shape, and two bottom plates in isosceles trapezoid shapes on the wear-resisting composite steel plate; leveling the plates; and putting the cut wear-resisting layers of the left wear-resisting plate, the middle wear-resisting plate, the two bottom plates and the right wear-resisting plate outwards, and welding the wear-resisting layers on the outside surface of the hopper bottomof the main cutting board side of the hopper respectively through gas shielded arc welding or welding rod arc welding so that the wear-resisting layers are integrated with the original hopper bottominto a whole. After the treatment by the method, the service life of the hopper is greatly improved, the frequent maintenances are avoided, the working efficiency of the loading machine is improved, and steel materials are saved.

The invention relates to a heat preservation ageing device. During ageing treatment of a metal product, the natural ageing time is relatively long, and during drying oven ageing, the charging capacity is small, the product needs to be transferred after ageing, the labor intensity of workers is high, and the working efficiency is low. Therefore, the heat preservation ageing device comprises a large-scale charging container, wherein an ageing bin is arranged in the large-scale charging container and comprises an ageing bin top plate, an ageing bin bottom plate and a plurality of ageing bin division plates; a temperature measuring set for measuring the temperature in the ageing bin is arranged on the ageing bin top plate; a plurality of ageing containers are arranged on the ageing bin division plates; a temperature control heating device is arranged below each ageing container; and a tray for placing a product subjected to deep processing is arranged in each ageing container. The heat preservation ageing device is simple in structure, scientific in design and convenient to use, and can be used for controlling temperature singly, and the charge amount is greatly increased, so that the working efficiency is improved, the labor intensity of workers; and the heat preservation ageing device has good practical application values and popularization values.

The invention relates to a preparation method of low-cost high-performance lithium iron phosphate. The method comprises the steps of carrying out high-energy smashing and nanocrystallization on an iron source in advance, then weighing a lithium source, the iron source and a phosphorus source according to the molar ratio of (1.01-1.03): 1: 1, doping a titanium source or a magnesium source with themolar ratio of (0.01-0.02), then adding a carbon source with the mass fraction of (4-10)%, and performing high-energy smashing and sufficient mixing; tabletting and granulating a mixed material to obtain a flaky precursor; putting the precursor into a kiln for sintering, controlling the temperature to rise to 730 DEG C within 0.5-4H under the protection of an inert gas atmosphere, keeping the temperature at 730 DEG C for calcining for 0.5-4H, and then cooling to room temperature along with the furnace to obtain a carbon-coated lithium iron phosphate material; and finally, crushing the preparedlithium iron phosphate, crushing, screening and removing iron to obtain a lithium iron phosphate finished product with particles in approximate normal distribution. The lithium iron phosphate is prepared by directly mixing and fusing dry powder, the process is simple, the sintering time is shortened, and compared with a wet complex production process and higher equipment investment, the preparation method can reduce the cost by more than 30%.