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120results about How to "Reduce dust pollution" patented technology

Process and device for processing liquid steel slag

The invention provides a process and device for processing liquid steel slag, belonging to the technical field of the metallurgical equipment and aiming at solving the problems of liquid steel slag granulation and liquid steel slag sensible heat recovery. The process for processing the liquid steel slag comprises the following steps: a, granulating the liquid steel slag by quenching gas; b, cooling the high-temperature liquid solid steel slag; c, recovering liquid steel slag sensible heat; and d, reusing cooling gas. The invention also provides a device for processing liquid steel slag. The invention is mainly characterized in that firstly, the liquid steel slag is granulated in a sealed granulating tank, the liquid steel slag is small and uniform, the pure Fe in the liquid steel slag can not be oxidized and the economic benefit of the liquid steel slag processing process is improved; secondly, the liquid solid steel slag is cooled in a sealed cooling tank, less cooling gas leaks, the dust pollution is reduced, and less cooling gas is supplemented; and thirdly, the inert gas is used as the cooling gas in the granulating tank and the cooling tank, and the cooling gas inversely exchanges heat with the liquid steel slag, thus the efficiency of exchanging heat between the liquid steel slag and the cooling gas is improved, the temperature of the cooling gas at the outlet is increased, and the liquid steel slag sensible heat is recovered.
Owner:NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY +1

Method for preparing hydraulic calcium oxide through papermaking alkali recycling causticized white sludge

The invention discloses a method for preparing hydraulic calcium oxide through papermaking alkali recycling causticized white sludge. The method comprises the following steps: preparing a mixture: putting papermaking causticized white sludge and pulverized fuel ash into a forced type stirrer for stirring, and putting burnt clay into the forced type stirrer for evenly stirring to obtain the mixture; molding the mixture: molding by adopting a centrifugal rolling balling method or shaking pressurization method; naturally curing the mixture: putting the molded mixture balls into the natural environment with good ventilation conditions for stacking and curing, and putting adobes into the natural environment with good ventilation conditions for stacking and curing for 7-14 days until the quality of the adobes can not be further reduced and the primary compression strength of the adobes is more than 1MPa; and calcining the material: conveying the cured and dried material balls or adobes intoa shaft kiln for calcining and insulating, then naturally cooling to the room temperature, and milling the calcined products to be used for preparing silicate products. The invention reduces the dustpollution and solves the problem of treatment of pulverized fuel ash.
Owner:NANJING UNIV OF SCI & TECH

Module assembly-type wall surface and shed surface coating, screeding and polishing device

The invention belongs to the field of building and relates to a wall surface and shed surface coating, screeding and polishing device, in particular to a module assembly-type wall surface and shed surface coating, screeding and polishing device. The module assembly-type wall surface and shed surface coating, screeding and polishing device aims to solve the problems that an existing wall wiping device cannot conduct coating, floating, polishing and dust collecting at the same time on a wall surface and a shed surface, operation is complex and inflexible, and the work intensity of operators is enhanced. A transversely-moving sliding rail unit is composed of two second rails arranged in parallel side by side and is installed on the upper face of a fixed sliding rail unit. A traveling lifting bracket mechanism is installed on the transversely-moving sliding rail unit. A splashing-type coating and screeding mechanism and a polishing and dust collecting mechanism are installed on the traveling lifting bracket mechanism in an alternate mode and can be connected with a material supplying and dust collecting mechanism in an alternate mode. The lower surface of a first rail of the fixed sliding rail unit is provided with a plurality of supporting uprights provided with adjusting supporting feet at the bottoms.
Owner:哈尔滨佳饰达科技开发有限公司

Circulating ore crusher

The invention discloses a circulating ore crusher. The circulating ore crusher comprises a shell, a feeding hole, a crushing plate, a supporting foot and a discharge opening, wherein the feeding holeis formed in the top of the shell; the crushing plate is arranged inside the shell; the outer side wall of the shell is fixedly connected with a crushing motor; a sieve plate is arranged below the crushing plate; the right side wall of the shell is fixedly connected with a circulating barrel; a screw rod is arranged inside the circulating barrel; the lower surface of the circulating barrel is fixedly connected with a circulating motor; the top of the circulating barrel is provided with a circulating discharge hole; the circulating discharge hole is positioned over the feeding hole; a water spray pipe is arranged inside the shell; the spray pipe is fixedly connected with the top of the shell. Ore to be crushed is put into the feeding hole, and a baffle plate is arranged on the inner wall ofthe feeding hole, so that dust is prevented from being discharged from the feeding hole, and pollution on the working environment is avoided; the ore is extruded and crushed by the crushing plate, and water is sprayed onto the ore in a crushing process, so that dust pollution is lowered greatly; the ore is crushed circularly by the circulating barrel, so that the crushing effect is enhanced.
Owner:ZHENGZHOU HAOEN ELECTRONICS INFORMATION TECH CO LTD

Minitype geophysical prospecting drilling machine dust-proof bracket convenient to move

The invention discloses a minitype geophysical prospecting drilling machine dust-proof bracket convenient to move. The bracket comprises a drilling machine platform, fixed frames, brackets, a drillingmachine and a drilling head, the left and right sides of the drilling machine platform are respectively fixedly connected with fixed frames, and the left and right sides of the drilling machine are respectively fixedly connected with the brackets; the lower ends of the brackets are fixedly connected with the drilling machine platform, the lower ends of the fixed frames are fixedly connected withsupporting blocks, and fixed bolts penetrate through the middles of the supporting blocks; the outer side walls of the fixed frames are fixedly connected with fixed blocks, the lower surfaces of the fixed blocks are hinged to connecting rods, and idler wheel groups are arranged on the lower ends of the connecting rods; the lower surfaces of the fixed blocks are further hinged to telescopic mechanisms, the supporting blocks are fixedly connected with the ground by utilizing the fixed bolts, the stability of the machine is improved, during the drilling operation, an exhaust fan is utilized to suck dusty gas into an air filter through an air suction hood, the air filter is utilized to filter the dusty gas, dust pollution is reduced, the telescopic mechanisms are used for controlling the idler wheel groups for lifting, and it is convenient to move the drilling machine.
Owner:GEOPHYSICAL SURVEY TEAM ANHUI PROVINCIAL BUREAU OF COAL GEOLOGY

Derusting and lining pouring integrated machine for interior of centrifugal pipe

The invention provides a derusting and lining pouring integrated machine for the interior of a centrifugal pipe. The derusting and lining pouring integrated machine comprises a rack, upper reeling plates, lower reeling plates, a fixed end centering positioning conical plate, a cantilever end centering pressing buckle conical plate, tensioning rods, pulling ropes, a hanging bearing sleeve piece and a speed adjusting motor. An output shaft of the motor is connected with the fixed end centering positioning conical plate through a rotating transmission shaft assembly on the rack. The cantilever end centering pressing buckle conical plate and the fixed end centering positioning conical plate are opposite and connected together through the tensioning rods, the hanging bearing sleeve piece and the pulling ropes. The pulling ropes are wrapped on the upper reeling plates and the lower reeling plates through the hanging bearing sleeve piece. According to the derusting and lining pouring integrated machine for the interior of the centrifugal pipe, derusting and lining pouring can be both achieved, the occupied space is small, operation is easy and convenient, and the adaptability to the change of the pipe length and the lining thickness is high.
Owner:辽宁天和钢管防腐有限责任公司

Automatic stacking device on bagged material loading machine

ActiveCN108177992AStable and stableSolve the problem of fully automatic loadingConveyorsStacking articlesEngineeringMechanical engineering
The invention provides an automatic stacking device on a bagged material loading machine. The automatic stacking device comprises a bag dropping platform, a dropped bag moving mechanism and a transverse moving mechanism, wherein the bag dropping platform is used for material grouping and bag dropping; the dropped bag moving mechanism is used for moving the bag dropping platform forward and backward; the transverse moving mechanism is used for transversely moving the dropped bag moving mechanism; a front-end positioning baffle plate and a bag pushing mechanism are connected with the front and rear ends of the dropped bag moving mechanism; a middle bridge connected with the transverse moving mechanism is arranged between the bag pushing mechanism and the dropped bag moving mechanism; and a bag stopping platform, a bag conveying mechanism and a bag placing mechanism are connected onto the middle bridge. The automatic stacking device provided by the invention has the beneficial effects that through the time sequence control of the bag conveying mechanism and the bag placing mechanism, the multi-form material stacking and grouping can be achieved; through the dropped bag moving mechanism and the bag dropping platform, the material stacking, dropping and arranging can be achieved; through the transverse moving mechanism, the front-end positioning baffle plate and the bag pushing mechanism, the material stacking and positioning can be achieved; and under the precise positioning control of the transverse moving mechanism, stacking groups which are subject to a plurality of stackingcycles along the compartment width direction can be orderly spliced, and then the automatic stacking and loading requirements between any material sizes and any compartments can be met.
Owner:CNBM HEFEI POWDER TECH EQUIP CO LTD +1

Laser cutting machine with safety protection device

The invention discloses a laser cutting machine with a safety protection device. The laser cutting machine comprises a box body, a safety cover, a dust hood and a filter screen. The filter screen is arranged on the inner side of the box body and is cylindrical. One side of the filter screen is provided with an exhaust fan. A flow guide cover is connected to the filter screen. A workbench is arranged above the flow guide cover, and through holes are uniformly distributed in the workbench. According to the laser cutting machine, suction force is generated through the operation of the exhaust fan; when a workpiece is cut by a cutting head, smoke in the cutting process is subjected to flow guide adsorption through the dust hood above the cutting head, the flow guide cover below the workbench is used for conducting flow guide adsorption on dust below the workpiece, and the dust enters the filter screen to be filtered, so that dust pollution in the cutting process is reduced, and the workingenvironment quality is improved; the box body is in a closed state through the safety cover, the cutting process is checked through a perspective window, splashing sparks in the cutting process are prevented from flying all around and scalding operators, and operation safety is improved.
Owner:孝感金致科技有限公司

Sandblasting-free, directly-coated and weathering-resistant steel and production method thereof

The invention discloses a sandblasting-free, directly-coated and weathering-resistant steel and a production method thereof. The steel comprises the following chemical components in percentage by weight: 0.04-0.12 percent of C, 0.20-0.50 percent of Si, 0.25-0.5 percent of Mn, less than or equal to 0.008 percent of S, less than or equal to 0.03 percent of P, 0.25-0.45 percent of Cu, 0.30-0.60 percent of Cu, 0.20-0.50 percent of Ni, 0.015-0.025 percent of TI, less than or equal to 0.03 percent of Als and the balance of iron and inevitable impurities. The protection method comprises the following steps: converter smelting, refining, continuous casting, heating, rolling, controlled cooling, reeling and finishing, wherein the controlled cooling is laminar flow cooling and adopts front section pulled cooling, and the concentration of Cl in laminar flow circulating cooling water is less than or equal to 100 mg / L; the reeling temperature is controlled to be 540-560 DEG C; a flatting roll is used for flatting, the surface textured roughness of the flatting roll Ra is 50-100 <mu>m, RPc is 45-70 pcs / cm, and the reduced quantity of the strip steel is 1-4 percent. The sandblasting-free, directly-coated and weathering-resistant steel has good weathering resistance, can be directly coated without a sand blasting pretreatment process, has a strong coating adhesion force and has low probability of falling off.
Owner:武汉钢铁有限公司

Uncoiling and wire drawing device

The invention discloses an uncoiling and wire drawing device. The uncoiling and wire drawing device comprises a base, a feeding frame, an uncoiling mechanism, a wire drawing mechanism, a wire coilingmechanism and a control mechanism, wherein the uncoiling mechanism comprises a first uncoiling part, a longitudinal straightening part, a transverse straightening part and a material conveying part; the wire drawing mechanism comprises a wire drawing bin, wire drawing wheels, wire drawing liquid sprayers, a filter screen and a liquid collecting groove; and the wire coiling mechanism comprises a wire winding rotary shaft, a fixing seat and a wire winding motor. According to the uncoiling and wire drawing device, an upper positioning roller and a lower positioning roller are arranged to cooperate with each other, relative positions and rotating speed of the upper positioning roller and the lower positioning roller are adjusted according to the size of a wire rod, so that stability of the material feeding is guaranteed; the first uncoiling part, the longitudinal straightening part, the transverse straightening part and the material conveying part are arranged to cooperate with one another, the wire rod is straightened in all directions, and convenience is provided for subsequent processing; and the wire drawing wheels and the wire drawing liquid sprayers are arranged to cooperate witheach other, wire drawing operation is carried out on the wire rod in a closed environment, noise and dust pollution are reduced, the environment is protected, and the wire drawing effect is good.
Owner:XINCHANG HESHENGXIN BUSINESS CO LTD

Mushroom culture medium prepared from coffee grounds

InactiveCN103553801AReduce wood consumptionReduce dust pollutionFertilizer mixturesCoffeaWater content
The invention discloses a mushroom culture medium prepared from coffee grounds. The mushroom culture medium comprises dry materials and water; by setting the weight of the dry materials to be 100 parts, the dry materials are composed of following components by weight percent: 20%-50% of the coffee grounds, 28%-58% of cotton seeds, 15%-20% of wheat bran, 1%-2% of gypsum and 1%-2% of lime. The mushroom culture medium is specifically prepared as follows: recycling and concentrating the waste coffee grounds and drying; crushing the coffee grounds until the diameter is 0.1cm-0.5cm; uniformly mixing the crushed coffee grounds with the cotton seeds, the wheat bran, the gypsum and the lime according to the weight ratio; adding water to enable the water content to be 60%-70% to prepare a primary material; and sterilizing the primary material for 1-1.5 hours under the conditions that the density is 1.5kg/cm<2> and the temperature is 121 DEG C and cooling. According to the mushroom culture medium prepared from the coffee grounds, the coffee grounds are used for replacing a sawdust part to provide necessary components including cellulose and the like; the growing of mushrooms is accelerated; the content of heavy metal of the mushrooms is reduced due to utilization of physical and chemical adsorption of the coffee grounds and no pesticide residue exists.
Owner:李洁

Foundation pit support breast beam wire saw cutting method

The invention relates to a foundation pit support breast beam wire saw cutting method which includes the steps: firstly, embedding steel bars into cast-in-place piles, daubing contact surfaces among the cast-in-place piles and a breast beam, and binding breast beam reinforcing steel bars; secondly, drawing cutting block diagrams; thirdly, pre-embedding PVC (polyvinyl chloride) sleeves, and avoiding blocking of the sleeves; fourthly, pre-embedding round steel lifting hooks on two sides of each concrete block to be cut; fifthly, constructing beam plate structures below a supporting beam and thebreast beam, and cutting parts of the pre-embedding PVC sleeves higher than beam surfaces; sixthly, arranging supporting systems at the bottom of the supporting beam; seventhly, arranging sleepers onthe supporting beam; eighthly, fixing a wire saw machine on the breast beam; ninthly, enabling a diamond wire saw to wound the pre-embedding PVC sleeves, and connecting the diamond wire saw with the wire saw machine to cut concrete blocks; tenthly, hosting the cut concrete blocks by the round steel lifting hooks to off-site place to be crushed. According to the method, noise and dust pollution aredecreased, the cut concrete blocks are transferred to off-site place to be crushed, and inside cleaning cost and time are reduced.
Owner:CHINA MCC20 GRP CORP
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