2689results about How to "Reduce dust" patented technology

Disclosed herein is a particle comprising a particulate substrate; and a thermoplastic elastomer present on or in the substrate as an amount sufficient to improve the dust suppression of the particle above that which would occur if the thermoplastic elastomer was absent. Disclosed herein is a particle comprising a particulate substrate; and a thermoplastic elastomer, wherein the particle has a compressive strength retention of greater than about 50% as measured by a UCS test and a turbidity of about 10 to 200 NTU after a one hour ball mill test.

The invention relates to cat litter prepared from dry bean dregs and a preparation method thereof, wherein the cat litter is used for burying excrement and urine of pets. The cat litter is prepared from the following components through a series of processes including crushing, mixing and forming according to weight ratio: 5-90 parts of dry beam dregs, 10-90 parts of plant adhesive, 20-80 parts of filling agent, 0.1-10 parts of releasing agent, 0.1-5 parts of surface active agent, 0.01-3 parts of preservative, and 1-10 parts of deodorant. According to the invention, the cat litter prepared by the preparation method provided by the invention has the advantages of being wispy and hollow in surface, low in structural density, light in weight, higher in water absorption speed and better in water absorption performance; compared with other cat litters, the cat litter has the advantages of being more saving in use amount and higher in cost performance; after being used, the cat litter can be directly washed away through a sewer and cannot be blocked; the cat litter is convenient to clean; and the cat litter provided by the invention has the advantages of being environment-friendly, non-toxic, pollution-free, strong in absorption performance, simple in production process and free from wispy dust in production and transportation processes and has a deodorization function.

The invention provides reinforced aerogel monoliths as well as fiber reinforced composites thereof for a variety of uses. Compositions and methods of preparing the monoliths and composites are also provided. Application of these materials in transparent assemblies is also discussed.

Proppants for hydraulic fracturing of oil and gas wells have a polymeric coating that is strengthened with reinforcing particulates that are reactive with, or chemically bonded to, the polymeric proppant coating. Preferably, these particulates are added into the coating during the coating process. In one embodiment, functionalized particulates are used that become grafted into the polymer of the proppant coating through the chemical functionality imparted to the particulates. If non-functionalized particulates are used, a coupling agent is preferably added to enhance the bond strength between the added particulates and the polymeric matrix of the proppant coating.

A non-asbestos friction disk for the brake of drilling machine, heavy machinery, etc is prepared from glass fibres, organic fibres, low-smelting-point metal powder and resin-rubber mixture. Its advantages are low hardness, high toughness, high friction coefficient, high mechanical strength, and low abrasion.

The invention discloses herbicide effervescent tablets containing halosulfuronmethyl and pretilachlor and a preparation method thereof. The active ingredients of the herbicide effervescent tablets comprise 0.5 to 5 weight percent of halosulfuronmethyl, 10 to 25 percent of pretilachlor and the balance of an assistant. The effervescent tablets can be prepared by a direct dry-process tabletting method or a method of wet-process granulating first and then tabletting; the direct dry-process tabletting method comprises mechanically grinding the assistant, uniformly mixing with the assistant and directly tabletting the two raw material medicines; and the method of wet-process granulating first and then tabletting comprises drying the two raw material medicines and the ground assistant, mixing, adhering, granulating to prepare an acid soft material and an alkaline soft material and tabletting. The prepared effervescent tablets are new herbicide preparation products which are environment-friendly and convenient to use. The herbicide effervescent tablets can effectively prevent and control various weeds such as weed from broad leave family, grass family, cyperaceae family and the like in rice shooting fields and transplanting fields.

The invention discloses a tunnel pipe thin-layer retort for coal and oil shale and a retort process thereof, relates to a retort and a process for producing coal tar and shale oil, and solves the problems that the conventional retorts and processes have large heat loss at semicoke cooling sections, the retort time is difficultly controlled accurately, the oil yield is low and the treatment capacity of the single furnace is small. The retort comprises a drying section, a retort section, a high temperature cooling section and a low temperature cooling section, wherein the semicoke cooling section is divided into two sections by a roller feeding machine, heat exchange of cooling wind is carried out at the high temperature semicoke section, the low temperature cooling section is communicated with a tunnel pipe, and drying gas enters the drying section via the tunnel pipe. According to the process, retort oil gas led out from a retort oil gas outlet of a retort furnace is purified and then used as circulation retort gas, and gas led out from a drying gas outlet of the retort furnace is used as the circulation drying gas to carry out retort. With the retort and the retort process, an addition of 20 percent of semicoke residual heat is recovered from per ton raw material, the retort time is accurately controlled, the oil yield is high, and the treatment amount of the single furnace is large; and the retort and the retort process are mainly applied to the field of coal chemical industry.

A heat dissipation device comprises a cylindrical heat dissipation device body, a plurality of heat dissipation holes formed in the heat dissipation device body, a blocking piece tightly attached to the heat dissipation device body, and drivers connected between the blocking piece and the heat dissipation device body. The blocking piece comprises a blocking piece body, blocking strips connected with the blocking piece body, and first connecting portions arranged on the blocking piece body. The heat dissipation device body is provided with second connecting portions matched with the first connecting portions. The drivers are connected between the first connecting portions and the second connecting portions. The drivers are made of shape memory alloy material and can deform in the circumferential direction of the heat dissipation device body when heated to reach the preset temperature value. According to the heat dissipation device, in the room temperature, the blocking piece can close the heat dissipation holes so that the heat dissipation device can be in a closed state. After the heat dissipation device is heated, the drivers made of the shape memory alloy material can be stretched out and drawn back or can be bent in the circumferential direction of the heat dissipation device body, and therefore the blocking piece is driven to rotate so as to open the heat dissipation holes, and the heat dissipation efficiency is improved.

A method and device for converting rotary motion to reciprocating percussion motion. The device comprises a machine body (4), a travel portion (7), and a reciprocating percussion portion (5). The reciprocating percussion portion (5) comprises a percussion drive mechanism (2), a rocker arm (6), and a percussion head (1). The percussion drive mechanism (2) comprises a percussion power source member (11), a transmission component, and a crankshaft (10). The percussion power source member (11) comprises a motor, and the motor comprises a power output shaft (14). The transmission component comprises a power gear (13) and a transmission gear (12). The power gear (13) is mounted on the power output shaft (14). The transmission gear (12) drives the crankshaft (10). The transmission component comprises a transmission shaft. The power output shaft (14) is perpendicular to the rocker arm (6), and is parallel to the transmission shaft and the crankshaft (10) so that the transmission gear (12) drives the crankshaft (10) to convert rotary motion to reciprocating motion; or the power output shaft (14) is parallel to the rocker arm (6), the crankshaft (10) is driven to convert rotary motion to reciprocating motion after the power direction is changed by a power bevel gear and a transmission bevel gear. The crankshaft (10) drives the percussion head (1) to perform reciprocating percussion. The travel portion (7) drives the machine body to travel. The machine body (4) drives the reciprocating percussion portion (5) to move and work continuously. The device applies to the mining field or mechanical engineering field, and has advantages such as strong structural strength and a small amount of maintenance.

The invention discloses fabricated blocks, a fabricated-block building system and a construction method thereof. The fabricated blocks comprise a main block and auxiliary blocks, wherein the auxiliary blocks comprise 1 / 2 blocks, T-shaped node blocks, corner blocks and end blocks; the main block is composed of two parallelly-arranged long transverse ribs and at least two short longitudinal ribs perpendicularly connected between the two long transverse ribs; the two ends of the main block are both in an H-shaped open structure, the main block is in mortise-and-tenon joint with a block (horizontally adjacent to the main block) by virtue of a tenon and a rabbet, and simultaneously a vertical through hole is formed between the main block and the block (horizontally adjacent to the main block); and a horizontal through hole is formed between the main block and a block (vertically adjacent to the main block) by virtue of opposite openings of U-shaped grooves on the short longitudinal ribs. According to the invention, the relatively complex construction operation of traditional blocks bonded by using mortars is simplified, and the working efficiency, anti-permeability performance and leakage resistance of the block are improved, meanwhile, the noise and dust of an operation field also can be reduced, and energies and raw materials can be saved, thereby satisfying the green and environmentally-friendly requirements of building construction and facilitating the implementation of housing industrialization.

The invention discloses a pipeline dredging agent with a stable oxygenation effect and a preparation method of the pipeline dredging agent. The pipeline dredging agent comprises strong base, a non-volatile liquid, special powder, an oxygen bleaching agent and a chlorine bleach, and can further comprises an additive, and is prepared through a special feeding process. The combination of the non-volatile liquid and the special powder is innovatively introduced, so that the oxygenation stability and the anti-caking property of a product in a storage process are greatly improved, and the dust amount and the nose chocking feeling are reduced and alleviated. The product disclosed by the invention also has the advantages of rapid dissolution, stable heat radiation, low chloride smell, low metal corrosion, easy production and machining and the like, is applicable to dredging or cleaning and maintaining drainage pipelines, and has a good application prospect.

The invention relates to a concrete / stone crushing machine, in particular to a concrete / stone crushing and screening all-in-one machine. The technical purpose of the invention is to provide the concrete / stone crushing and screening all-in-one machine. For achieving the technical purpose, the concrete / stone crushing and screening all-in-one machine is provided by the invention and comprises a cabinet and the like; a first opening is formed in the lower side of the left wall of the cabinet; and a collecting box and a partition plate are arranged at the inner bottom of the cabinet, the collectingbox is located at the left side of the partition plate, a guide plate is arranged in the middle of the left wall of the partition plate, a screening device is arranged on the partition plate, the right wall of the collecting box is rotationally connected with a cabinet door, a first handle is arranged on the cabinet door, and a crushing box is arranged on the left side of the top of the cabinet.By adopting the concrete / stone crushing and screening all-in-one machine provided by the invention, the effects that concrete / stone can be screened, and dust can be reduced are achieved, a screening mesh plate can be used for screening out unqualified concrete / stone, the quality of the concrete / stone is improved, a water pump transports water, a spray nozzle enables the water to uniformly spray the surface of the concrete / stone, and accordingly the dust generated during crushing is reduced.