37results about "Calcium carbide" patented technology

The invention relates to a pellet and a preparation method thereof, and relates to the technical field of calcium carbide preparation, the pellet comprises the following components in parts by mass: 5.2-8.3 parts of calcium carbonate crystal, 56.8-59.7 parts of calcium oxide, 32.0-37.5 parts of calcium hydroxide, and 0.6-0.9 part of carboxylation modified lignin; the preparation process comprises the steps of raw material pretreatment, mineralization slurry preparation, mineralization and curing. According to the pellet and the preparation method, the active lime screen underflow serves as a calcium source, a stable structure with high strength and multistage pores is constructed on the molecular scale by adopting the biomimetic mineralization principle, and the pellet cracking risk is effectively reduced; meanwhile, an inert binder does not need to be added, effective calcium content dilution is avoided, the high-temperature smelting working condition of the distribution stone is adapted, and the production cost is remarkably reduced.

[Problem] To provide a metal carbide and a method for producing a metal carbide with which a bioplastic raw material can be relatively inexpensively and stably supplied. [Solution] One aspect of the present invention provides a metal carbide having a biomass degree of 0.01% to 100% as measured by the 14C isotope measurement method defined in ASTM D6866.

The utility model provides a waste calcium carbide remelting and upgrading conveying device, which belongs to the technical field of conveying devices, and comprises a crushing chamber, a rotator arranged in the crushing chamber, two first rotating shafts rotationally connected in the rotator, two crushers fixedly connected to the lower ends of the two first rotating shafts, and two second rotating shafts rotationally connected in the two crushers. The two first gears are fixedly connected to the circumferential surfaces of the two first rotating shafts, the gear ring is fixedly connected to the interior of the crushing chamber, and the first gears are meshed with the gear ring. Meanwhile, powder calcium carbide directly reaches the furnace bottom through the inside of the electrode and does not make contact with a furnace charge layer, current shunting is eradicated, waste products are directly added to the furnace bottom after being powdered and can be rapidly reacted and fused with semi-finished product calcium carbide, and electric energy consumption is greatly reduced.

The invention discloses a plasma hot blast stove consolidation reduction material system using CO as a medium. The plasma hot blast stove consolidation reduction material system comprises a plasma heating device, a consolidation reduction material device, a preheating air supply device and a cooling device. The material consolidation and reduction device comprises a preheating section, a consolidation and reduction section and a cooling section and is used for sequentially preheating, consolidating and reducing and cooling the materials, so that the materials in the form of powder pellets form target materials; the preheating gas supply device is used for conveying preheating gas generated by flue gas waste heat and material sensible heat in the consolidation reduction section according to a preset first temperature range into the preheating section and preheating the materials; the plasma heating device adopts CO as a medium to generate high-temperature CO plasma gas, and the materials in the consolidation reduction section are consolidated and reduced through the high-temperature CO plasma gas according to a preset second temperature range; and the cooling device adopts CO as a medium to generate low-temperature gas in a preset third temperature range, and conveys the low-temperature gas to the cooling section, so that a target material can be formed when the material is cooled to be less than or equal to 100 DEG C.

To provide acetylene utilizable as a raw material for various bioplastics while reducing loads on the environment, to provide a method for producing the acetylene, and to provide an acetylene derivative.SOLUTION: According to an aspect of the present invention, there is provided acetylene, wherein the acetylene contains carbon atoms derived from biomass.SELECTED DRAWING: None

The utility model discloses a kind of dry-process acetylene crude crushing system of calcium carbide, tippler is docked with stacker, mechanical breaking hammer is equipped on the stacker top, stacker outlet is docked with conveying scale plate machine, the export end of conveying scale plate machine is docked with the import of jaw crusher, the outlet of jaw crusher is docked with large angle of inclination lifting belt, the export end of large angle of inclination lifting belt is docked with the inlet of cone crusher, the outlet of cone crusher is docked with flat belt conveyor, the export end of flat belt conveyor is docked with coarse material bin import.The utility model is through reasonable design and equipment configuration, realizes the efficient crushing and conveying of calcium carbide.It is high in degree of automation, high in crushing efficiency, good in environmental protection performance, high in equipment stability and strong in flexibility etc., so that it has remarkable advantage in dry-process acetylene production process, can effectively improve production efficiency, reduce production cost and reduce environmental pollution.

The application discloses a method for preparing metal magnesium and calcium carbide by using waste photovoltaic panels and carbide slag, and relates to the technical field of solid waste treatment.The method comprises the following steps: obtaining silicon powder by treating the waste photovoltaic panels, and using the silicon powder as a reducing agent to prepare metal magnesium; grinding the treated carbide slag to obtain carbide slag powder as a calcium source; using a magnesium-containing material as a magnesium source, and using semi-coke as a carbon source to prepare calcium carbide; mixing and forming the above-mentioned materials according to a certain proportion, and then performing three-stage continuous high-temperature reaction to sequentially complete the three processes of carbide slag decomposition, metal magnesium preparation by a silicon thermal method and calcium carbide preparation by a carbon thermal method; and finally collecting the metal magnesium, the calcium carbide and calcium silicate by-products.The method realizes the collaborative resource utilization of two kinds of solid waste, produces high-value-added metal magnesium and calcium carbide, has no wastewater discharge in the whole process, and reasonably disposes waste gas and waste residue, and has the advantages of green low carbon, low energy consumption and continuous production.

A method for producing a metal carbide, comprising: electrode preparation comprising: preparing a first molten salt containing at least one first metal ion selected from the group consisting of alkali metal ions and alkali earth metal ions, and a carbonate ion, and applying a voltage to the first molten salt to precipitate a precipitate containing carbon on a first electrode, thereby obtaining a second electrode; and electrolysis comprising applying a voltage to a second molten salt containing at least one second metal ion selected from the group consisting of alkali metal ions and alkali earth metal ions using the second electrode to obtain a carbide composition containing a carbide of the second metal.

A collaborative calcium carbide furnace-exit transfer system and method using an RGV trolley and a mobile platform, relating to the technical field of calcium carbide production equipment, includes a furnace body. An open-loop transfer track is arranged around the furnace bore. A cooling zone is located on the side furthest from the furnace body. Parallel storage tracks are laid near the transfer track within the cooling zone. At least one storage track is equipped with an RGV tractor. An open section is formed between the storage track and the transfer track, with a horizontal track at the open section. A mobile platform is mounted on the horizontal track, and a mobile track is mounted on the mobile platform. One end of the RGV tractor can be hooked onto a receiving trolley on the storage track and pull it along the storage track and the mobile track. Hook mechanisms are provided at both ends of the open section of the transfer track, automatically clamping the neck of the wire rope on the winch and engaging or disengaging it with the head and tail ends of the receiving trolley. This invention improves the automation level and scheduling capability of the trolley during furnace-exit transfer.

The application provides a screen protection insulation kit, which has a vertical surface structure and a horizontal surface structure which are integrally molded by using multiple layers of materials. The vertical surface structure is an arc-shaped thin wall formed by circumferentially dividing a cylinder, and the horizontal surface structure is a fan ring-shaped thin wall which extends radially and outwardly from the lower end of the vertical surface structure. The vertical surface structure comprises, in sequence, a first mica paper, a second mica paper, a first glass cloth, a first mica plate, a second glass cloth, a third mica paper, and a fourth mica paper, which are attached to each other by high-temperature glue. The horizontal surface structure comprises the first mica paper, the second mica paper, the first glass cloth, the second glass cloth, the third mica paper, and the fourth mica paper of the vertical surface structure, and further comprises a second mica plate and a third mica plate which are stacked between the first glass cloth and the second glass cloth. The application also provides a manufacturing process of the screen protection insulation kit, in which a steel mold is used to mold multiple layers of materials into the screen protection insulation kit.

The utility model provides an opening and closing device based on a calcium carbide pot inserting plate, and relates to the technical field of calcium carbide pots, the opening and closing device comprises a translation rotating assembly and a calcium carbide pot body, the top of the translation rotating assembly is provided with a force arm assembly, the force arm assembly is provided with an operation assembly, and the translation rotating assembly comprises a base; a lead screw is rotationally installed in the base, and guide rods which are symmetrically distributed are fixedly installed in the base. The horizontal precise translation is realized through the screw rod and the guide rod, and the basic shaft is driven by the gear pair to complete the rotary positioning. A rotary supporting structure formed by the auxiliary blocks and the annular sliding grooves effectively disperses operation loads from single-point stress of the basic shaft to multi-point and multi-direction bearing, the rigidity, the anti-overturning capacity and the movement stability of the whole structure are greatly improved, and therefore the positioning repetition precision and the mechanical durability of the device during long-term operation are remarkably improved.

This invention discloses a gray-carbon pelletized calcium carbide and its preparation method, relating to the field of calcium carbide material technology and belonging to patent classification number C01B32 / 942. The preparation method involves: acid activation, cetyltrimethylammonium bromide modification, and high-energy ball milling of bentonite to prepare a nano-sized bentonite binder; graft copolymerization of starch and acrylic acid, followed by epichlorohydrin crosslinking and hydrophobication with a silane coupling agent to prepare a hydrophobic grafted starch binder; composite of polyethylene glycol-modified cellulose nanofibers with the above two binders, followed by high-speed shear emulsification to obtain a composite binder; mixing gray carbon and quicklime powder, adding the composite binder, and molding to obtain raw blocks; and pyrolyzing the raw blocks under an inert atmosphere to obtain gray-carbon pelletized calcium carbide. The calcium carbide raw blocks and calcium carbide pellets prepared by this invention exhibit excellent mechanical strength.

The utility model belongs to the technical field of industrial waste residue recycling, and particularly discloses a system for producing lime from carbide slag. The system is composed of a carbide slag warehouse, metering equipment, conveying equipment A, conveying equipment B, conveying equipment C, conveying equipment D, a homogenization metering system, a cyclone preheating system, a cyclone calcination decomposition system, a suspension cooling system, a lime warehouse, a homogenization metering system, granulation equipment, a calcium carbide production line and the like. The device disclosed by the utility model has the beneficial effects that the process flow is simple, the layout is compact, the suspension preheating decomposition calcining technology of cyclone preheating, pipeline type decomposition furnace and suspension cooling is adopted, continuous production can be realized, the production efficiency is high, the decomposition rate of carbide slag is greater than 98%, and the yield is high; according to the utility model, the calcium carbide slag suspension calcination technology is adopted, the unit product energy consumption of lime can be reduced, so that the unit energy consumption of calcium carbide finished products is reduced, the calcium carbide by-product furnace gas is adopted as the calcination fuel, the reasonable and full utilization of coal resources can be realized, and no extra coal resource consumption is caused.

To provide chloroprene utilizable as a raw material for synthetic rubbers while reducing loads on the environment, to provide a method for producing the chloroprene, and to provide a chloroprene rubber.SOLUTION: According to one aspect of the present invention, there is provided chloroprene, wherein the chloroprene contains a carbon atom derived from biomass.SELECTED DRAWING: None

To provide porous carbon suitable for a positive electrode additive, capable of improving input / output characteristics of a nonaqueous electrolyte secondary battery at room temperature and securing peel strength of an electrode.SOLUTION: Wherein the porous carbon has a pore volume of 2 nm or more and 200 nm or less measured by the BJH method of 0.8cm3 / g or more, a bulk density of 0.10g / cm3 or less, a mode diameter of pores measured by the BJH method of 150 nm or less, and an average primary particle size of 1 μm or more and 100 μm or less.SELECTED DRAWING: Figure 1

The application discloses a manufacturing process of a calcium carbide furnace nonmetal discharging column, and comprises the following steps: S1), preparing materials: high-aluminum cement, fused corundum particles (Al2O3 is greater than or equal to 85%, and the particle size is less than or equal to 5 mm), silicon carbide powder (SiC is greater than or equal to 80%, and the sieve residue of 0.045 mm is not greater than 20%), and silicon nitride powder (Si3N4 is greater than or equal to 80%, and the sieve residue of 0.045 mm is not greater than 20%); S2), manufacturing a mold and a steel reinforcement cage; S3), mixing: the high-aluminum cement, the fused corundum, the silicon carbide and the silicon nitride are mixed at a ratio of 5:75:15:5, water is added at 4%-6% of the weight of the mixture, and the mixture is stirred, mixed and then left to stand; S4), pouring: a layer of plastic film is laid on the inner wall of the mold, the steel reinforcement cage is placed in the plastic film, 2% water is added to the casting material after standing, and the casting material is stirred and then slowly poured into the mold cavity; and S5), drying: the mold is opened after air drying. The application has the advantages of convenient manufacturing, good insulation performance of the product, low cost, excellent comprehensive performance, long service life, improved calcium carbide furnace operation rate, and convenient installation and dismounting.

The invention relates to a process method for producing calcium carbide, which comprises the following steps of: powdering limestone blocks, calcining by a preheater and a decomposing furnace to obtain high-quality high-temperature lime powder, metering by a metering device, conveying the high-quality high-temperature lime powder and metered semi-coke powder blocks to a mixing stirrer, uniformly stirring to obtain high-temperature materials, continuously conveying the high-temperature materials to a ball press machine, and carrying out ball press molding on the high-temperature materials. According to the invention, the result is incomparable to that of the traditional equipment and the production process, and the method has the advantages of little dust, high utilization rate of heat energy and electric energy, and high productivity.

Disclosed in the present invention are a circulating pelletizing system and process for a calcium oxide powder calcinated from calcium carbide slag. The technical solution is as follows: the circulating pelletizing system comprises an aggregate bin, a powder bin, a mixing device, a powder pre-pressing bin, a pre-presser, a pulverizer, an intermediate bin, a pelletizing machine, a trommel screen and a finished-product bin, wherein discharge ports of the aggregate bin and the powder bin are each connected to a first gate valve, a discharge port of the first gate valve is connected to a first star-type ash discharge valve, a discharge port of the first star-type ash discharge valve is connected to a screw scale, a discharge port of the screw scale is connected to the mixing device, a discharge port of the mixing device is connected to a first belt conveyor, a discharge port of the first belt conveyor is connected to a first bucket hoist, and a discharge port of the first bucket hoist is connected to a first FU chain conveyor. The beneficial effects of the present invention lie in: using the powder which undergoes primary pelletizing and pulverizing as the raw material for secondary pelletizing improves the structural strength of the powder, optimizes the particle size distribution of the pelletizing raw material, and significantly increases the pellet formation rate of a product.

A method for producing a metal carbide including: preparing a molten salt containing at least one first metal ion selected from alkali metal ions or alkali earth metal ions; preparing an electrode containing carbon; and applying a voltage to the molten salt using the electrode to obtain a metal carbide composition containing a carbide of the first metal.

The invention belongs to the technical field of calcium carbide production, and particularly relates to a blending process of coke powder in calcium carbide production, which comprises the following steps: S1, selecting coke powder with the particle size of 0-10mm and coke with the particle size of 8-30mm as carbon raw materials; s2, uniformly mixing coke powder, coke and quick lime in sections, wherein the mass of the coke powder accounts for 12-14% of the total mass of the carbon raw material; the invention further provides a doping device which is used for the blending process of the coke powder in calcium carbide production. The invention aims to mix the coke powder and the coke in the particle size range according to the proportion in a segmented manner, so that the coke powder and the coke are more uniform, the air permeability and the resistance distribution in the furnace can be ensured, under the condition of normal production, the coke powder with lower cost is used for replacing part of the coke, and compared with pure coke production, the production cost is reduced, and the production efficiency is improved. And operation in the furnace is more stable.

The utility model discloses an improved calcium carbide pot inserting plate structure which is applied to a calcium carbide pot body, open grooves are formed in the outer walls of the two sides of the calcium carbide pot body, slope angles are arranged at groove openings of the open grooves, a pair of inserting plates are arranged at the open grooves, sliding grooves are horizontally and inwards formed in the outer ends of the inserting plates, and the inserting plates are arranged in the sliding grooves. More than one rolling wheel is horizontally and rotatably connected in the sliding groove, the rolling wheels are in rolling contact with the slope angle, and a wedge-shaped surface is arranged on the outer side of the inner end of the inserting plate; the calcium carbide pot has the advantages that the slope angle is designed for the open slot of the calcium carbide pot, the inserting plate and the idler wheels are designed in a matched mode, automatic closing of the inserting plate is achieved through the dead weight of the inserting plate, automatic opening of the inserting plate can be achieved by using the wedge-shaped face on the inserting plate and the wedge-shaped hoisting clamp in a matched mode, and the inserting plate completely covers the open slot. Liquid calcium carbide is effectively prevented from splashing into the tank during pouring, and the equipment failure rate is reduced.

[Problem] To provide acetylene that can be used as a raw material for various bioplastics while reducing environmental impact, a method for producing acetylene, and an acetylene derivative. [Solution] Acetylene is provided according to one embodiment of the present invention, the acetylene containing biomass-derived carbon atoms.

The invention discloses a calcium carbide furnace intelligent electrode regulation and control system and an anti-crusting control method, and relates to the technical field of calcium carbide furnace intelligent electrode regulation and control. The intelligent electrode regulation and control system for the calcium carbide furnace comprises an intelligent electrode regulation and control module, an active anti-crusting control module, a data acquisition and preprocessing module and an intelligent decision support module, and the intelligent electrode regulation and control module, the active anti-crusting control module and the intelligent decision support module are respectively connected with the data acquisition and preprocessing module. The active anti-crusting control module is connected with the intelligent electrode regulation and control module, the operation stability is improved, the operation fluctuation range of the calcium carbide furnace is reduced through multivariable coordinated regulation and control, electrode consumption is reduced, crusting prevention and control are strengthened, the crusting occurrence rate is reduced through an active pre-judgment and linkage intervention mechanism, and the production interruption time is shortened.

The utility model discloses a calcium carbide pot capable of automatically closing pot lugs, which comprises a pot body, wedge-shaped grooves are respectively arranged on two sides of the pot body, the pot lugs are arranged in the wedge-shaped grooves in a sliding mode, the wedge-shaped grooves are of right trapezoid structures, notches of the wedge-shaped grooves are gradually reduced from top to bottom, first chamfers are outwards arranged at the bottoms of the wedge-shaped grooves, and second chamfers are arranged at the bottoms of the wedge-shaped grooves. Baffles are further fixed to the positions, located on the outer sides of the inclined waist faces of the wedge-shaped grooves, of the two sides of the pot body, movable gaps are reserved between the baffles and the vertical surfaces of the wedge-shaped grooves, inclined sliding grooves are formed in the tops of the baffles, and the sliding grooves are parallel to the inclined waist faces of the wedge-shaped grooves. Limiting blocks are fixed to the bottoms of the pot lugs, limiting bolts are fixed to the outer sides of the pot lugs, and the limiting bolts are arranged in the sliding grooves in a sliding and penetrating mode. The demolding device has the advantages that through the design of the scheme, the process of hoisting cooled calcium carbide in the pot body can be completed while the pot lugs are demolded. The pot lugs can automatically slide down to the bottoms of the wedge-shaped grooves according to the gravity of the pot lugs, automatic closing action is completed, and therefore the process that the pot lugs are disassembled and assembled without manual work is achieved.

To provide a metal carbide capable of stably supplying a raw material of a bioplastic at a relatively low cost, and to provide a method for producing the metal carbide.SOLUTION: According to an aspect of the present invention, there is provided a metal-carbide having a biomass degree of 0.01% or more and 100% or less, the biomass degree being measured by a 14C isotopic measurement method defined in ASTMD6866.SELECTED DRAWING: None

The invention relates to the technical field of calcium carbide installation operation, in particular to a low-energy-consumption and high-efficiency calcium carbide production line modular installation process which comprises furnace body installation, a raw material storage and transportation module, a carbon material drying module, a screening and batching module, a furnace gas purification module, a raw material conveying module, an electric furnace feeding module, an electrode paste feeding module and a calcium carbide production module. According to the raw material storage and transportation module, lime is fed through a vibrating feeder, switched to be distributed through an electro-hydraulic three-way distributor and conveyed to a batching station through a belt conveyor. The other part of lime enters a lime shed for temporary storage through a conveyor, materials are unloaded to an underground material receiving pit through a wheel loader, are fed through a vibrating feeder and are conveyed to a screening and batching station through a belt conveyor; according to the calcium carbide production process, through scientific process improvement, the production efficiency of a calcium carbide production line is effectively improved, the production environment pollution of the production line is reduced, meanwhile, the production energy consumption of the production line is reduced, and the production and use requirements of enterprises are effectively met.

[Problem] To provide: chloroprene that can be used as the starting material for a synthetic rubber while reducing the environmental impact thereof; a chloroprene production method; and a chloroprene rubber. [Solution] One embodiment of the present invention provides chloroprene that contains biomass-derived carbon atoms.

The invention discloses a preparation method of pulverized coal balls for calcium carbide production, which specifically comprises the following steps: (1) screening fine clean coal until the particle size is less than or equal to 0.5 mm, and then uniformly mixing and stirring 10-50wt% of coking coal powder and 50-90wt% of fine clean coal to obtain a mixed material A; (2) adding a binder into the mixed material A, uniformly stirring, and controlling the moisture content to be 8-12wt% to obtain a mixed material B; and (3) pressing the mixed material B into pulverized coal balls, and then performing low-temperature drying and high-temperature drying on the prepared pulverized coal balls to obtain the pulverized coal balls for calcium carbide production. According to the method, the coking coal powder and the fine clean coal are optimally combined, and the prepared coal powder balls meet the calcium carbide production requirements through particle size grading and moisture control; when the method is applied to calcium carbide production, the efficient utilization of resources is realized, and the production cost is also reduced.

The invention relates to a pyrolysis ball and a preparation method thereof, and belongs to the technical field of calcium carbide raw material production, the pyrolysis ball comprises pulverized coal, lime powder, lime kiln screen underflow, a dispersing aid and a composite binder; the composite binder is prepared from tea polyphenol grafted modified starch, nano bentonite and polyethylene glycol; the preparation method comprises the steps of raw material pretreatment, mixing, forming and carbonization. According to the preparation method, an organic-inorganic composite network is constructed through the tea polyphenol grafted modified starch and the nano bentonite, and a preparation process is combined, so that the pyrolysis ball has full-temperature-range structural integrity, particularly has excellent high-temperature stability and high reaction activity, and can directly meet industrial production requirements of the distribution stone.

The invention provides a mixture for producing calcium carbide and a preparation method of the calcium carbide. The mixture for producing the calcium carbide comprises a calcium-containing raw material, a carbon-containing raw material and auxiliaries, and the auxiliaries comprise calcium fluoride, lanthanum fluoride and calcium molybdate. According to the invention, calcium fluoride is used as a mineralization basis, so that stable crystal lattices of calcium oxide are effectively destroyed; by virtue of efficient segregation of La < 3 + > at a crystal boundary, the introduced lanthanum fluoride is cooperated with calcium fluoride, so that the interface energy and the system melting point between reactants are further remarkably reduced, and the synthesis initial temperature of the calcium carbide is reduced by virtue of the calcium fluoride-lanthanum fluoride synergistic melting reduction effect; the problem that the reaction temperature of a traditional process is too high is fundamentally solved, and the electric energy consumption is greatly reduced.