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33results about How to "Reduce chance of sticking" patented technology

Soybean milk preparing method of soybean milk grinder

The invention relates to a soybean milk preparing method of a soybean milk grinder. The soybean milk preparing method comprises the following steps that: (a) a motor drives a smashing cutter to stir the soybean milk for t1 seconds so as to produce appropriate foam; (b) a heating device is started to heat water and a material until the mixture is going to leak out; and (c) the motor drives the smashing cutter to smash the mixture to prepare the soybean milk and boil the soybean milk by heating. The method is characterized in that: in order to replenish the foam and prevent the material from becoming adhesive in the heating process of stage (b), the soybean milk is stirred for t3 seconds every after a time interval of t2. The soybean milk preparing method stirs the soybean milk for 5 to 10 seconds before starting heating, so most of the material does not produce too mush foam and only anti-leaking requirement is basically met. In the heating process, the soybean milk is stirred once after a certain period of time to replenish the foam and prevent the material from being adhered to the bottom of the soybean milk grinder after being heated for a long time. Therefore, the disadvantages in the soybean milk preparing method in the prior art are overcome better.
Owner:JOYOUNG CO LTD

Degreasing and reeling method of cold rolled titanium strip coil before annealing

InactiveCN102409277AReduce chance of stickingAvoid flat rollsEmulsionTitanium
The invention provides a degreasing and reeling method of a cold rolled titanium strip coil before annealing, which comprises the processes of cold rolling, degreasing, vacuum annealing or cover-type annealing. Under the condition that the rolling emulsion concentration is 0.8-2.5%, the temperature is 40-50 DEG C, the deformation rate in the process of rolling is 20-80% and the pass deformation rate is 3-10%, the strip coil is carried out 5-19 passes rolling to the target thickness, and is degreased and cleaned, different unit tension are used for reeling by aiming at different positions of cold rolled titanium strip coil when degreasing, the titanium stripe after reeling is packed and sent to a vacuum furnace or a bell furnace for heat treatment. According to the invention, the bonding rate of cold rolled titanium strip coil after vacuum annealing or cover-type annealing is substantially reduced, the problems of rolling, open coiling and scattered rolling can be avoided when the strip coil uses small unit tension for reeling.
Owner:LUOYANG SUNRUI TI PRECISION CASTING

Method for breeding sturgeons

The invention discloses a method for breeding sturgeons, and belongs to the technical field of sturgeons breeding. The method comprises the steps that step 1, sturgeon parent fish with excellent shapes and characters is selected, the parent fish is put into a breeding pond for split-pond breeding 1-2 years before egg / sperm retrieval, sand covers the bottom of the breeding pond, the sand is coveredwith a filter net, cobblestones with the thickness of 2-3 cm are laid on the filter net, and submerged plants and shrimps and crabs are put into the breeding pond; step 2, when gonadogenesis of the parent fish reaches IV period, leuteinizing hormone releasing hormone is adopted to perform drug hasten parturition on the parent fish, the using amount is milter 1.2-1.5 microgram per kilogram and raun 2.5-3 microgram per kilogram, and flowing water is adopted in the breeding pond from one month before drug hasten parturition is conducted to the time when egg cells / sperm are collected; step 3, artificial fecundation is conducted on the collected egg cells / sperm, fertilized eggs are put into an incubator to be incubated until seedlings are produced, and the breeding process is completed. By means of the method, the incubation rate and quality of the sturgeons are improved.
Owner:贵州龙源冷水渔业有限公司

Parallel flow condenser and air conditioner with same

The invention provides a parallel flow condenser. Two sides of the condenser are provided with collecting pipes; the collecting pipes are internally provided with multiple spacers used for separating internal runners of the collecting pipes into multiple sub-runner regions; the spacer behind the first sub-runner region is provided with a leak hole. By use of the characteristic that a liquid refrigerant has specific weight greater than that of press machine oil and is collected toward the bottom of the condenser under the action of gravity, each spacer of each collecting pipe of the parallel flow condenser is additionally provided with a flowing hole, and a part of liquid refrigerant and press machine oil can be guided into the rear half part of the condenser, so that the possibility that the liquid refrigerant or press machine oil is attached to the pipe walls of the collecting pipes is reduced, complete direct contact between a gaseous refrigerant and the pipe walls is ensured, and thus the heat exchange efficiency of the middle of the parallel flow condenser is improved. In addition, the invention also provides an air conditioner.
Owner:HAIER GRP CORP +1

Coating material for restraining excessive bonding during smelting reduction of iron ore pellets and preparation method of coating material

ActiveCN106222350AInhibit excessive bondingFully contactedShaft furnacePre treatmentInorganic materials
The invention discloses a coating material for restraining excessive bonding during smelting reduction of iron ore pellets and a preparation method of the coating material, and belongs to the technical field of smelting reduction ironmaking. The coating material comprises, by weight, 83%-95% of high-melting-point inorganic materials, 2%-8.5% of waste plastic, 0.2%-3% of sodium carboxymethylcellulose, 1.2%-4.5% of starch and 0.1%-2.5% of calcium lignosulphonate. The preparation method of the coating material comprises the following steps of pretreatment of the coating raw materials, preparation of the coating material, smearing of the coating material and drying. The coating material provided by the invention can effectively restrain excessive bonding between the iron ore pellets in the pre-reduction process of a smelting-reduction ironmaking technique, the coating material and the iron ore pellets are firmly bonded, and a coating can be effectively prevented from cracking and falling; and meanwhile, it is guaranteed that the metallization ratio of reduction products is high.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY

Method for restoring steep slopes of mining area by mechanical spraying of lime neutralizing sludge slag

The invention relates to a method for restoring steep slopes of a mining area by mechanical spraying of lime neutralizing sludge slag. The method comprises the following steps and conditions of addingtailing slag into the lime neutralizing sludge slag, mechanically stirring according to a mass ratio of 100:(70 to 300), and uniformly mixing, so as to obtain a mixed material a; adding an organic fertilizer, a composite fertilizer and grass seeds into the mixed material a, mechanically stirring according to a mass ratio of 100:(2 to 6):(0.1 to 0.3), and uniformly mixing, so as to obtain a mixedmaterial b; screening the mixed material b by a vibration screen, grading the coarse and fine materials, enabling the material under the screen to fall into a material bin of a spraying machine, and using as a dry powder mechanical spraying material; enabling a pipeline and pressure air flow to convey the spraying material to perform dry powder mechanical spraying on the area requiring ecologicalrestoration; covering a nonwoven fabric onto the sprayed area, and performing proper servicing management on the area according to the local climate environment. The method has the advantages that theneutralizing sludge slag can be applied to the dry powder mechanical spraying, the 'guest soil' material is protected, the loss of water and soil is prevented, the energy-saving and consumption-decreasing effects are realized, the method is suitable for the rooting, germinating and later fertilizer applying and caring of the plant grass seeds, the ecological environment benefit is good, and the like; the method is suitable for being applied into the field of ecological restoration of the mine areas.
Owner:ZIJIN MINING GROUP +1

Dredging device for aquaculture fish pond and working method thereof

The invention discloses a dredging device for an aquaculture fish pond. The dredging device for the aquaculture fish pond comprises a vehicle body and wheels. The wheels are mounted on both sides of the vehicle body. The wheels include a first wheel and a second wheel. The first wheel is arranged on the left side of the moving direction of the dredging device. The second wheel is arranged on the right side of the moving direction of the dredging device. The wheels are provided with air bags. The bottom of the vehicle body is provided with a sliding plate. A balance cavity is formed in the front end of the inside the vehicle body. The front end of the vehicle body is provided with a pollution absorbing device. A jet-flow device is installed on the pollution absorbing device. The inside of the vehicle body is also provided with a transfer device. The steering of the underwater is more smoothly by the fit of the wheels and the air bags. The weight of the front end of the vehicle body canbe dynamically controlled by the fit of sliding plate and the balance cavity, and it is guaranteed that the front end of the vehicle cannot sink into the mud when moving. The jet-flow device is used to jet high-pressure water, so that the sludge can be effectively dispersed from pond bottom. The transfer device can effectively break up the sludge in the sewage.
Owner:嘉兴金旅燕科技有限公司

Automatic flushing device and method for paste resin polymerization kettle

The invention provides an automatic flushing device and method for a paste resin polymerization kettle. The device comprises a multistage centrifugal pump and a high-pressure water pipe. The multistage centrifugal pump is arranged on a pipeline of the high-pressure water pipe, a polymerization kettle condenser is located at the top of the polymerization kettle and is in a row tube type, circulation cooling water is placed in a shell side, and incoagulable vinyl chloride monomer is placed in a pipe side; the water outlet end of the high-pressure water pipe is arranged at the top in the condenser and is opposite to the pipe side. The automatic flushing device for the paste resin polymerization kettle is characterized in that the polymerization kettle condenser is provided with a spray nozzleand is automatically flushed, a flange of the tail end of a polymerization kettle pressure horizontal pipe is additionally provided with a flushing water port, and it is guaranteed that the horizontal pipe is flushed. Through program control, after a polymerization reaction is completed, a large amount of foam still exists in the sections of the pressure horizontal pipe and the condenser row tube, flushing water is used for successfully flushing the foam to prevent the foam from generating autopolymer, and the bonding probability of the autopolymer is lowered.
Owner:ORDOS JUNZHENG ENERGY CHEM

Method of preparing high-alkalinity chromium-containing all-vanadium titaniferous pellets by adding calcium carbonate

ActiveCN109576490ASimple water absorption speedSlow water absorptionAlkalinitySodium Bentonite
The invention relates to a method of preparing high-alkalinity chromium-containing all-vanadium titaniferous pellets by adding calcium carbonate. The method comprises the following steps that S1, batching is performed, calcium carbonate and sodium-based bentonite ingredients are added into red-lattice chromium-containing vanadium titano-magnetite; S2, the mixture is divided into two parts, the first part of the mixture material is added with 3-4% of water by mass, the second part of the mixture material is added with the 6-8% of the water by mass, and wet mixing and leaving the materials to stand to ferment are performed correspondingly; and S3, material dividing and pelletizing are performed, pelletizing is performed on a disk pelletizer with revolving speed of 30-45 r / min, the water spraying amount is controlled to be 1-2 ml / 10 g of mineral aggregates, and the water adding and material feeding are performed per 30-100 seconds at intervals; the first part of mineral aggregates are used for pelletizing in the forming period of a master ball, and the second part of ore material aggregates are used for pelletizing in the growth period of the mother ball; S4, drying is performed; S5,the calcium carbonate is decomposed, pre-oxidated and pre-roasted, the calcium carbonate is decomposed and pre-roasted firstly at the temperature of 900-950 DEG C, and then insufficient amount of airis introduced into a furnace for pre-oxidation and pre-roasting; and S6, high-temperature oxidation consolidation roasting is performed, the incremental air is introduced into the furnace at the temperature of 1250-1300 DEG C to perform the high-temperature oxidation consolidation roasting, after sintering is completed, cooling is performed to prepare the high-alkalinity chromium-containing all-vanadium titaniferous pellets.
Owner:NORTHEASTERN UNIV LIAONING

Gas-based reduction method and system for granular iron ore and application

The invention provides a gas-based reduction method and system for granular iron ore and application, and relates to the technical field of smelting. According to the gas-based reduction method, pure oxygen and high-calorific-value fuel gas are not needed, natural gas is used as a raw material, compressed natural gas is converted into hydrogen-rich gas through desulfurization, steam reforming, shift reaction, first dehydration treatment and first CO2 removal treatment, the hydrogen-rich gas is preheated to be in countercurrent contact with the granular iron ore with a specific particle size and a specific preheating temperature to conduct a reduction reaction so as to prepare the granular directly reduced iron; and due to the fact that the particle size of the granular iron ore is small, the reduction reaction speed at the same temperature is higher than that of traditional pellets, other binders and sintering processes do not need to be introduced, pollution is greatly reduced, meanwhile, the granular iron ore at the specific preheating temperature and the hydrogen-rich gas are directly subjected to the reduction reaction, and the reduction reaction at low temperature is realized by utilizing the heat of the granular iron ore and the hydrogen-rich gas.
Owner:北京金博威科技有限公司

Method for rapidly replacing online tundish of ultra-wide thin slab continuous casting machine

PendingCN114682752AReduced pull resistanceSmooth connectionThin slabSlag
The invention discloses a method for quickly replacing an online tundish of an ultra-wide thin slab continuous casting machine, which comprises the following specific steps: before replacing the tundish, controlling the thickness of a covering slag layer in a crystallizer, cleaning sintered slag blocks in the covering slag layer, and cleaning up covering slag strips attached to the wall of the crystallizer; before the tundish is replaced and after the steel ladle is closed, along with continuous descending of molten steel in the old tundish, the pulling speed is controlled to descend, and secondary cooling water weak cooling control is carried out in the pulling speed control process; after the tundish is replaced, the pulling speed is controlled to be increased, and secondary cooling water is controlled to be normally cooled; the first preheating position new tundish and the pouring position old tundish are switched by starting the first tundish trolley and the second tundish trolley, meanwhile, the first tundish trolley is driven to the pouring position from the first preheating position, the method is suitable for a continuous casting machine, and rapid and safe replacement of the ultra-wide sheet billet tundish can be effectively achieved through the method.
Owner:ANYANG IRON & STEEL

Drill bit of variable-curvature screw pile driver

The invention provides a drill bit of a variable-curvature screw pile driver. The drill bit comprises a drill stem, a drill point, a screw blade and a drill pick; the curved surfaces of the two sides of the drill pick are an inner soil contacting curved surface and an outer soil contacting curved surface, respectively; the profile curve of the inner soil contacting curved surface of the longitudinal section of the drill pick and the profile curve of the outer soil contacting curved surface of the same conform to different equations, respectively; the drill point is composed of three drill point base bodies which are symmetrical to each other about the center of circle of an end face, going into soil, of the drill stem. The drill bit of the variable-curvature screw pile driver has the advantages that the equation curves adopted by the drill bit are optimized based on tests, the bionic curves applied to the inner and outer soil contacting curved surfaces are derived from cock toe soil contacting curved surfaces, the inner and outer soil contacting profile curves of the cock toes have excellent soil resistance reduction and desorption capability, and once the structures are applied to the drill pick part of the drill bit of the pile driver, the pile driver is enabled to have excellent soil excavation capability, and meanwhile, the soil resistance to the drill bit is also reduced, and therefore, the service life of the drill bit can be prolonged and the working efficiency of the drill bit can be improved.
Owner:HENAN UNIV OF SCI & TECH

Liquid-containing hazardous chemical substance treatment method

The invention belongs to the technical field of hazardous chemical substance treatment, and particularly relates to a liquid-containing hazardous chemical substance treatment method. A collection device used in the method comprises a box, a partition plate is arranged at the bottom of an inner cavity of the box body, the upper space of the box body is used for storing sandy soil, a sleeve is fixedto the top end of the partition plate, a piston is movably mounted within the sleeve, the bottom of the sleeve is provided with a first hole and a second hole, a first one-way valve is fixed in the first hole, a second one-way valve is fixed in the first hole, a straw is fixed at the first hole, the straw extends to the outside of the box body, and a soft disc is fixed to the free end of the straw. A third hole is formed in the partition plate, the third hole is formed in the end, far away from the sleeve, of the partition plate, and a third one-way valve is fixed in the third hole. Accordingto the method, leaked liquid-containing hazardous chemical substances are collected through the arrangement of the collection device, liquid can be absorbed, gas hazardous chemical substances also can be absorbed, and therefore the treatment efficiency and the treatment range of the hazardous chemical substances are improved.
Owner:淮南德元化工科技有限公司

Material for inhibiting biological attachment and preparation method thereof

A material for inhibiting biological adhesion at least comprises the preparation raw materials: resin, a functional material and an active material; the functional material at least comprises an antibacterial composition and salt, and the active material at least comprises a nonionic surfactant. The invention further provides an application of the material for inhibiting biological adhesion in thefields of transportation, constructional engineering, mechanical equipment and packaging engineering.
Owner:上海膜益信息科技有限公司

Efficient sludge treatment system

The invention discloses an efficient treatment system of oil sludge. The TPH (total petroleum hydrocarbons) content of the oil sludge treated is less than 1%. The oil sludge enters a dryer with a stirrer and an outer heating coil and is subjected together with hydrogen separated by a nitrogen making machine, to heat exchanging via heat transfer oil, a resulting product is subjected with oil sludge directly to convection drying, cracking heat of a thermal desorption unit performs on indirect heating on the oil sludge through the outer heating coil of the dryer, viscosity of the oil sludge is decreased after free water, interstitial water and part of light gases are removed, chances that the oil sludge cake in the heat desorption unit are also slimmed, and long-term running of the thermal desorption unit is guaranteed; the dryer with the stirrer and the outer heating coil uses the cracking heat of the thermal desorption unit, thus energy is saved; gases subjected to oil removal, dust removal and odor removal are used as fuels for a combustor, thus energy is saved; high-hydrogen gas from the dryer with the stirrer and the outer heating coil separates oil and water through bubbles generated by an air flotation machine, oil-water separation is efficient, and the separated oil is used as a fuel for the combustor, thus energy is saved.
Owner:大连爱德摩设备制造有限公司

A method for preparing high-basic chromium-vanadium-titanium pellets by using calcium oxide

ActiveCN109852791BGood for bonding into ballsHigh compressive strengthSodium BentoniteDry mixing
The invention relates to a method for preparing high-alkalinity chromium-containing vanadium-titanium pellets by adopting calcium oxide. The method comprises the following steps of mixing the raw materials including vanadium titano-magnetite, additive calcium oxide powder and sodium bentonite, so that the alkalinity of the raw materials is 1.8 to 2.1, drying and drying respectively, and carrying out dry mixing and mixing; averagely distributing the mixed ore materials into two parts, adding water accounting for 3% to 4% of the total mass of the raw materials in the first part, adding water with the total mass of 6% to 8% of the total mass of the raw materials in the second part, uniformly mixing, and hermetically standing; when pelletizing is carried out, a first part of mineral powder isused in the forming period of the master ball, a second part of mineral powder is used in the growth period of the master ball, the water spraying amount before the growth of the master ball is controlled to be 1ml of 10g of ore powder to 2ml of 10g of ore powder of mineral powder, preventing adhesion between the master balls, and adding water for 40 seconds to 90 seconds at each time, so that thediameter of the prepared pellets ranges from 8mm to 12mm; and preparing raw ball braised material, drying, pre-xidizing and roasting, carrying out secondary high-temperature oxidation roasting to obtain high-alkalinity chromium-containing vanadium-titanium pellets.
Owner:NORTHEASTERN UNIV LIAONING

Rotary clamping plate structure for drying of oryzias latipes

The invention discloses a rotary clamping plate structure for drying of oryzias latipes. The rotary clamping plate structure for drying of the oryzias latipes comprises a lower clamping plate, the inner wall of the lower clamping plate is provided with sleeves, the inner walls of the sleeves are provided with second friction teeth, telescopic rods are arranged at the upper ends of the sleeves in an inserted manner, the outer walls of the telescopic rods are provided with first friction teeth, and the first friction teeth are in contact with the second friction teeth. The upper ends of the telescopic rods are provided with connecting rods, the outer walls of the connecting rods are provided with anti-sticking pads, the front end of the lower clamping plate is rotatably connected with an upper clamping plate, the inner wall of the upper clamping plate is provided with connecting rods and anti-sticking pads, the upper clamping plate is provided with a sleeve ring, and the front and rear ends of the lower clamping plate are provided with rotating shafts. According to the rotary clamping plate structure for drying of the oryzias latipes, by arranging the multiple connecting rods on theinner walls of the upper clamping plate and the lower clamping plate and adjusting the heights of the connecting rods through the telescopic rods and the sleeves, the connecting rods in a proper supporting quantity can be selected according to the size of the oryzias latipes, the probability of sticking is reduced while the supporting strength is guaranteed, and damage of the surfaces of the oryzias latipes is avoided.
Owner:蒋颖婷

Control system for automobile electronic outside rear-view mirror

The invention relates to the technical field of production machinery, and discloses a control system for an automobile electronic outside rear-view mirror, the control system comprises a mounting plate, a first rotating shaft is mounted on the outer surface of the mounting plate, a shell is mounted at the top end of the first rotating shaft, and a rain baffle is fixedly mounted on the outer edge of the shell. A mirror frame is fixedly installed in the shell, a physical mirror surface is clamped in the mirror frame, a display screen is arranged on one side of the physical mirror surface, the outer surface of the physical mirror surface is coated with a hydrophobic film, a heating plate is arranged on the rear end face of the physical mirror surface, and a second rotating shaft is arranged on the rear end face of the heating plate, and a distance sensor and a temperature sensor are arranged in the shell. By arranging the warning lamp and the distance sensor, different kinds of light can be displayed in a grading mode according to the distance between the shell 5 and surrounding vehicles, so that the safety distance between the vehicle and other surrounding vehicles can be visually known, and the safety of vehicle driving is improved.
Owner:安徽光阵光电科技有限公司

Wet salt cold drying anti-caking device and method

The invention discloses a wet salt cold drying device and method for preventing bulk salt products from caking without adding an anti-caking agent. The device comprises a fluidized bed, a material input device, an air conditioner cold dry air device and a tail gas treatment device. An original external heating type fixed boiling fluidized bed is adopted, an external heating device is omitted, a constant-temperature and constant-humidity air conditioner unit cools and dehumidifies environment air, then cold dry air directly cools and dries wet salt, and the salt product caking phenomenon caused by temperature and humidity changes is effectively avoided.
Owner:江苏苏盐井神股份有限公司

A method for preparing self-fluxing pellets of medium-low alkalinity chromium-containing all-vanadium-titanium

ActiveCN109852790BSimple water absorption speedSlow water absorptionMagnetiteTitanium
The invention relates to a method for preparing medium-low-alkalinity chromium-containing all-vanadium-titanium self-fluxing pellets. The method comprises the following steps of S1, ingredient, addingcalcium carbonate and sodium-based bentonite into red-lattice chromium-containing vanadium titano-magnetite, and preparing a medium-low-alkalinity mixture; S2, wet-mixing and braising, adding water which does not exceed 7% of the mass of the mixture, and uniformly mixing; and then standing is carried out, so that the humidity is uniformly distributed; S3, pelletizing is carried out, wherein 30r to 40r per minute is used on a disc pelletizer, the water spraying amount in the forming period of the mother ball is controlled to be every 10 g is provided with1ml to 2ml of mineral materials, and fully rolling and compacting the ore materials, increasing the water spraying amount in the growth period of the mother balls to obtain the diameter of 6mm to 13mm; S4, drying the green pellets; S5, placing the green pellets in a furnace to be heated to 900 DEG c to 950 DEG c , and in the heat preservation condition, introducing insufficient amount of air into the furnace for pre-oxidation roasting,wherein the roasting time is 10minutes to 20minutes; S6, and carrying out high-temperature oxidation consolidation roasting, introducing the increment air into a furnace of 1250 DEG c to 1300 DEG c to increase the oxidizing atmosphere, carrying out high-temperature oxidation consolidation roasting, and then cooling to room temperature to prepare the medium-low-alkalinity chromium-containing all-vanadium-titanium self-fluxing pellet.
Owner:NORTHEASTERN UNIV LIAONING

Polycrystalline diamond compact with anti-adhesion properties

ActiveCN105134086BHas anti-stick propertiesReduce contact areaDrill bitsEdge surfaceMetallurgy
The invention discloses a polycrystalline diamond composite sheet with anti-adhesion properties, which comprises a cemented carbide substrate and a polycrystalline diamond layer compounded thereon, and a groove structure is arranged on the blade surface of the polycrystalline diamond layer; the groove The groove structure includes several radial grooves arranged radially along the radial direction of the blade surface, which divide the blade surface into several sectors, and several arc-shaped circumferential grooves connected with the radial grooves , a number of circumferential grooves are concentrically distributed with the center of the blade face as the center of a circle, and the circumferential grooves of adjacent sectors are arranged alternately. The polycrystalline diamond composite sheet with anti-adhesion characteristics of the present invention has a large number of grooves on the blade surface, so that the contact area between the cuttings and the blade surface is small, and the adhesion is reduced; drilling fluid can enter the grooves, lubricate On the face of the composite blade, the cuttings can be carried by the drilling fluid out of the bottom of the well, thus avoiding the adhesion and accumulation of the cuttings in front of the composite blade, fundamentally preventing the formation of the bag of PDC bit.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

A variable curvature screw pile driver drill bit

The invention provides a drill bit of a variable-curvature screw pile driver. The drill bit comprises a drill stem, a drill point, a screw blade and a drill pick; the curved surfaces of the two sides of the drill pick are an inner soil contacting curved surface and an outer soil contacting curved surface, respectively; the profile curve of the inner soil contacting curved surface of the longitudinal section of the drill pick and the profile curve of the outer soil contacting curved surface of the same conform to different equations, respectively; the drill point is composed of three drill point base bodies which are symmetrical to each other about the center of circle of an end face, going into soil, of the drill stem. The drill bit of the variable-curvature screw pile driver has the advantages that the equation curves adopted by the drill bit are optimized based on tests, the bionic curves applied to the inner and outer soil contacting curved surfaces are derived from cock toe soil contacting curved surfaces, the inner and outer soil contacting profile curves of the cock toes have excellent soil resistance reduction and desorption capability, and once the structures are applied to the drill pick part of the drill bit of the pile driver, the pile driver is enabled to have excellent soil excavation capability, and meanwhile, the soil resistance to the drill bit is also reduced, and therefore, the service life of the drill bit can be prolonged and the working efficiency of the drill bit can be improved.
Owner:HENAN UNIV OF SCI & TECH

Production method, production system and application of particle direct reduced iron

The invention provides a production method, a production system and an application of particle direct reduced iron, and relates to the technical field of smelting. According to the production method, granular iron ore with a specific particle size and a specific preheating temperature is subjected to countercurrent contact with feed gas at the specific preheating temperature for a reduction reaction, and the granular direct reduced iron is obtained; the particle size of the granular iron ore is small, the reduction reaction speed at the same temperature is higher than that of traditional pellets, other binders and sintering processes do not need to be introduced, energy consumption and pollution are greatly reduced, meanwhile, the granular iron ore at the specific preheating temperature and feed gas are directly subjected to the reduction reaction, the reduction reaction at low temperature is realized by utilizing the heat of the material, and the low-temperature reduction reaction does not need a special high-temperature-resistant material, so that the bonding probability of the particle direct reduced iron in the reduction process is reduced; and the average flow velocity of the specific feed gas is adopted, so that the feed gas can be in full contact with the granular iron ore, and the utilization efficiency of the feed gas is greatly improved.
Owner:北京金博威科技有限公司

Coating material for inhibiting excessive bonding of iron ore pellets in smelting reduction and preparation method thereof

ActiveCN106222350BInhibit excessive bondingFully contactedShaft furnaceCelluloseCarboxymethyl cellulose
The invention discloses a coating material for inhibiting excessive bonding of iron ore pellets in smelting reduction and a preparation method thereof, belonging to the technical field of smelting reduction ironmaking. The coating material of the present invention is composed of the following components in weight percentage: 83-95% of high melting point inorganic materials, 2-8.5% of waste plastics, 0.2%-3% of sodium carboxymethyl cellulose, 1.2%-4.5% of starch, Calcium lignosulfonate 0.1%-2.5%; the preparation method of the coating material of the present invention comprises the following steps: coating raw material pretreatment, coating material preparation, coating material coating and drying. The coating material of the present invention can effectively inhibit the excessive bonding between iron ore pellets in the pre-reduction process of the smelting reduction ironmaking process, and the coating material and the iron ore pellets are closely combined, which can effectively prevent the coating from cracking and falling off, and at the same time ensure The metallization rate of the reduced product is at a high level.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY

A method for preparing high-basicity chromium-containing all-vanadium-titanium pellets by adding calcium carbonate

ActiveCN109576490BSimple water absorption speedSlow water absorptionSodium BentoniteMagnetite
The invention relates to a method of preparing high-alkalinity chromium-containing all-vanadium titaniferous pellets by adding calcium carbonate. The method comprises the following steps that S1, batching is performed, calcium carbonate and sodium-based bentonite ingredients are added into red-lattice chromium-containing vanadium titano-magnetite; S2, the mixture is divided into two parts, the first part of the mixture material is added with 3-4% of water by mass, the second part of the mixture material is added with the 6-8% of the water by mass, and wet mixing and leaving the materials to stand to ferment are performed correspondingly; and S3, material dividing and pelletizing are performed, pelletizing is performed on a disk pelletizer with revolving speed of 30-45 r / min, the water spraying amount is controlled to be 1-2 ml / 10 g of mineral aggregates, and the water adding and material feeding are performed per 30-100 seconds at intervals; the first part of mineral aggregates are used for pelletizing in the forming period of a master ball, and the second part of ore material aggregates are used for pelletizing in the growth period of the mother ball; S4, drying is performed; S5,the calcium carbonate is decomposed, pre-oxidated and pre-roasted, the calcium carbonate is decomposed and pre-roasted firstly at the temperature of 900-950 DEG C, and then insufficient amount of airis introduced into a furnace for pre-oxidation and pre-roasting; and S6, high-temperature oxidation consolidation roasting is performed, the incremental air is introduced into the furnace at the temperature of 1250-1300 DEG C to perform the high-temperature oxidation consolidation roasting, after sintering is completed, cooling is performed to prepare the high-alkalinity chromium-containing all-vanadium titaniferous pellets.
Owner:NORTHEASTERN UNIV LIAONING

Unloading and scattering drying furnace

PendingCN110411152AImplement join transformationDeceleration circulation linkDrying solid materials with heatHearth type furnacesEngineeringGypsum
The invention provides an unloading and scattering drying furnace which comprises a drying furnace, a tangential air inlet pipe and an unloading device. The tangential air inlet pipe is arranged in the middle section of the drying furnace, a scattering rod device is arranged in a position of an air outlet of the tangential air inlet pipe in the drying furnace, a stirring device is arranged at theoutput end of the scattering rod device, and a conveying pipe is arranged above the stirring device. The bottom of the unloading device is arranged above the conveying pipe. The unloading and scattering drying furnace achieves connection conversion of static equipment and dynamic equipment by means of loop connection of an unloading pipe, drying equipment is directly connected to steam curing equipment, the circulating link of a wet material is reduced, the bonding probability of wet gypsum is reduced, and the efficiency is improved. By means of joint action of jittering and conveying, scattering, blowing and suspended drying, the material is dehydrated quickly, the bonding probability of wet gypsum is reduced, the heat efficiency can be improved by 80%, and industrial production and largescale of capacity are facilitated.
Owner:湖南昌迅科技环保股份有限公司

A method for preparing medium-low alkalinity all-vanadium-titanium self-fluxing pellets by using calcium oxide

ActiveCN109666790BImprove performanceGood for bonding into ballsSodium BentoniteDry mixing
The invention relates to a method for preparing middle and low alkalinity all-vanadium-titanium self-fluxed pellets through calcium oxide. According to the method, vanadium-titanium ore powder, calcium oxide powder and sodium bentonite are dried first, and then are subjected to dry mixing, water is added for matching, and uniform material mixing and closed standing are performed; pelletizing is performed, the water spraying amount is controlled at 1ml / 10g ore powder to 2ml / 10g ore powder before growing of mother balls, and the interval between water adding and material adding each time is 45 seconds to 90 seconds, the ore powder sufficiently rolls to be compacted, and green ball pellets are made; green balls are subjected to material braising; drying is performed, and then pre-oxidizing roasting is performed; and temperature rises, secondary high temperature oxidizing roasting is performed, then cooling is performed, and the middle and low alkalinity high chrome type all-vanadium-titanium self-fluxed pellets are made. The method solves the problems that the green balls are low in strength, low in compressive strength and large in humidity, and prone to pulverization, bursting and the like after drying, and the middle and low alkalinity high chrome type all-vanadium-titanium self-fluxed pellets are made. The made pellets meet the furnace entering requirement of a blast furnace,improves the pellet ore-forming efficiency and lowers cost.
Owner:NORTHEASTERN UNIV LIAONING
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