182results about How to "Suppress dust" patented technology

A hemostatic device for promoting the clotting of blood includes a gauze substrate, a clay material disposed on the gauze substrate, and also a polyol such as glycerol or the like disposed on the gauze substrate to bind the clay material. When the device is used to treat a bleeding wound, at least a portion of the clay material comes into contact with blood emanating from the wound to cause the clotting. A bandage that can be applied to a bleeding wound to promote the clotting of blood includes a flexible substrate and a gauze substrate mounted thereon. The gauze substrate includes a clay material and a polyol. A hemostatic sponge also includes a gauze substrate and a dispersion of hemostatic material and a polyol on a first surface of the substrate.

A single-step method for preparing a free-flowing, non-dusting micronutrient-coated particulate solid fertiliser material, the method comprising applying a single fluid onto particulate solid fertiliser material at ambient temperature without chemical reaction or chelation, said single fluid comprising a suspension of one or more micronutrient materials in an oil.

The invention discloses a preparation method of a naturally-degradable compound fertilizer anti-blocking agent and an application thereof. The naturally-degradable compound fertilizer anti-blocking agent comprises the following components in percentage by mass: 10-20 percent of fatty amine or salt thereof, 20-25 percent of stearic acid, 15-20 percent of oleic acid, 5-15 percent of refined glycerin and 20-50 percent of waste edible oil and fat, and the sum of all the components is 100 percent according to the percentage. The preparation method comprises the following steps of: mixing all the components according to the proportion, heating to be 70 DEG C -85 DEG C, and stirring and reacting for 15 minutes-30 minutes. The used amount of the compound fertilizer anti-blocking agent is 05-2.0kg/t (compound fertilizer), and a granulation mode of a high air-cooling crystallization tower of an all-molten compound fertilizer is adopted to mix the naturally-degradable compound fertilizer anti-blocking agent with the compound fertilizer. In the preparation method and the application thereof, the processing is simple, the use cost is low, the anti-blocking performance is good, the purely natural and environmentally-friendly performances are achieved, the absorption of crops is convenient, the fertilizer effect is enhanced, and the soil is protected.

The invention relates to a phosphorus ore dust suppressant composition and a preparation method thereof. The phosphorus ore dust suppressant composition comprises water-soluble polyvinyl alcohol, guar gum, microbicide, and water. The phosphorus ore dust suppressant provided by the invention can form a solidifying layer with certain strength and tenacity on the surface of phosphorus ore or powdered ore, which allows granular or powdered phosphorus ores to bond together, so as to effectively suppress dust emission of powder phosphate ores. The phosphorus ore dust can also be used for treatment of soil desertification and dust suppression at construction sites or dust suppression of other ores and can not pollute environment.

The invention belongs to the technical field of ecological restoration of discarded land in mining area, relating to a stable ecological restoration technology for vegetation on the side slope of a late dam of a tailing pond under the condition of no earthing soil, and realizing a root system network for sand consolidation by planting vetiveria zizanioides and seeding side slope afforesting grass seeds between the seed rows of the vetiveria zizanioides, wherein the proportioning of the side slope grass seeds are Bermuda grass, white clover, alfalfa and astragalus adsurgens the proportion of which is 5-10:1-2:1-2:1-2. The method of the invention can be used for carrying out ecological restoration of the side slope of late dam of the tailing pond under the condition of no earthing, has the effects of stabilizing side slope, conserving water and soil, restraining running water and raising dust of the tailing sands and the stable vegetable layer is established by using the method.

A method for treating a mass of coal to suppress emanation of coal dust therefrom, the mass of coal having, prior to treatment, an exposed surface from which dust may emanate, comprises applying to the exposed surface an aqueous fluid comprising gelatinized starch to form a layer of the fluid over the surface and drying the layer of the fluid to form a crust over the surface.

The invention belongs to the technical field of foaming agents, and particularly relates to a foaming agent for a shield machine. In order to solve the problems that various properties including the uniformity, the stability, the lubricating properties, the permeability and the like of foams of a domestic foaming agent at current cannot completely meet requirements for foams in shield tunneling, and the adaptability of the foaming agent has certain limit, the invention provides the foaming agent for the shield machine, and the foaming agent is prepared from sodium dodecylsulfate, sodium alcohol ether sulphate, sodium alpha-olefin sulfonate, modified polyethoxylated silicone, and water in a certain proportion. According to the foaming agent disclosed by the invention, the working performance of soil is improved, so that the soil forms plastic deformation to provide uniform and controllable support pressure, and a working surface is stable; leakage is reduced, the sealing properties of the working surface are strengthened, internal frictional force is reduced, abrasion of the soil on cutter heads, conveyors and conveyer belts is reduced, and the energy consumption is reduced; the viscosity of a soil mass is reduced, and generation of plugging is avoided; and the foaming agent has the effect of restraining dust during construction of rock and soil tunnels and mines.

A dust suppressant composition and a method for suppressing dust particularly on roads, the dust suppressant composition comprising a carrier and one or more dust suppressing microbes.

The invention relates to an environment-friendly water-soluble adhesive dust inhibitor and a preparation method thereof. The environment-friendly water-soluble adhesive dust inhibitor comprises the following components in percentage by weight: 0.1-2% of sodium lactate, 0.1-6% of a pregelatinized starch, 2-10% of glycerinum, 0.1-5% of an adhesive, 1-5% of urea, 0.2-2% of a polyacrylic resin, 0.1-1%of a surfactant, 0.1-3% of an emulsion, 0.02-0.5% of texanol, 0.1-2% of an environment-friendly pigment and the balance of water, and the inhibitor is finally prepared through stirring and mixing. Compared with the prior art, the inhibitor is applied to dust inhibition and the like in exposed fields such as mine tailing ponds, city exposed grounds, municipal construction, coal transportation andstorage yards, is not limited by use fields, and is capable of reducing environment pollution and reducing resource waste.

The invention discloses a road dust depressor and a preparation method thereof. The road dust depressor is prepared from 0.5-10% of petroleum asphalt, 5-20% of glycerol, 1-5% of anhydrous calcium acetate, 0.5-5% of a surfactant, 1-5% of a cosolvent, 1-2% of sodium metasilicate and 55%-90% of water. The preparation method includes: at room temperature, adding deionized water into a reaction kettle, starting stirring and conducting heating to 50DEG C, adding anhydrous calcium acetate in batches, after complete dissolving, adding glycerol, after dissolving, adding the surfactant, road asphalt, the co-solvent and sodium metasilicate in order, performing stirring dissolving to a homogeneous phase so as to obtain a brown-black brown aqueous solution, and carrying out standing, cooling and filling, thus obtaining a finished product. The road dust depressor has good moisture retention, moisture absorption and adhesion, and has remarkable dust suppression effect and long dust suppression period. The product is safe to use, has no corrosion to metal, is non-toxic, can be biodegradable, has no influence to vegetation, is an environment friendly product, and can be widely applied to dust control of unpaved roads, urban asphalt pavement, strip mine roads and the like.

The upper travelling driving device 2 and a lower travelling driving device 3 are provided in an upper part and a lower part of the mast 1 of the stacker crane. The lower travelling driving device 3 controls travelling and position of the stacker crane, and the upper travelling driving device 2 is driven on the basis of a speed signal of the lower travelling driving device 3 so as to restrict vibration of the mast 1 with the upper travelling driving device 2.

The present invention provides a process for suppressing dusting of dusting materials by spraying an aqueous dispersion of polytetrafluoroethylene (PTFE) or modified polytetrafluoroethylene onto the exposed exterior surfaces of the dusting material to fibrillate at least part of the dispersion and coat the exposed exterior surfaces of the dusting material with a web of fibrils of polytetrafluoroethylene or modified polytetrafluoroethylene. The process is especially advantageous for suppressing dusting of dusting materials contained in a pile, stockpile or open-topped container and dusting materials contained in open-topped transport vehicles.

The invention discloses a soil solidifying agent with a compound function and a use method thereof. The soil solidifying agent is used for preventing soil, sand dunes and the like from being subjected to wind erosion, water erosion and generating environmental pollution. Anionic polyacrylamide, sodium silicate and aluminum sulfate are selected as the components of the soil solidifying agent. According to an L9 (34) orthogonal design, three levels of concentration is selected for each reagent. An unconfined compressive strength test, an indirect tensile strength test and a water soaking test are used for testing a formed standard test piece, thereby obtaining an optimal formula of the soil solidifying agent. A test result shows that a novel soil solidifying agent developed in a spraying applying form has an excellent solidifying function and obtains an excellent composite economic benefit. The soil solidifying agent is an ideal environment-friendly product and has a huge ecological environmental protection benefit.

The invention relates to the technical field of dust suppression in construction, in particular to a spray dust suppression device for construction sites, which is characterized in that it includes a deck, a dust detector, a controller, and a valve; Type groove, a spring is fixed on one side of the half-shaped groove, and the other end of the spring is fixedly connected with the baffle plate. The ends are fixedly connected, the middle part of the outer wall water supply pipe is fixedly connected with one end of an inner wall water supply pipe, the tops of the outer wall water supply pipe and the inner wall water supply pipe are bent downwards in opposite directions, and the outer wall water supply pipe and the inner wall water supply pipe The tops of the water supply pipes are respectively connected through and fixedly to a spherical atomizing nozzle. The invention can effectively capture the dust in the air near the fence inside and outside the construction site, suppress the dust inside and outside the site, improve the environmental quality inside and outside the site, and protect the health of workers.

The invention belongs to the technical field of control for coal flow flying dust and particularly relates to a coal flow dust suppressant as well as a preparation method and an application thereof. The coal flow dust suppressant comprises components in parts by weight as follows: starch-grafted acrylic polymer, a surfactant and water. The coal flow dust suppressant has good coagulation property,wettability and permeability, dust particles are wetted rapidly and coagulated together, grain size and weight of the dust particles are increased, meanwhile, the coal flow dust suppressant can rapidly permeate into the coal flow, and the dust suppression effect is realized. According to the coal flow dust suppressant, the technical defect of low dust suppression speed of a traditional dust suppressant can be effectively overcome.

A surfactant comprising an N-long-chain acyl amino acid or a salt thereof dried by a spray dryer, which contains 280 mesh pass particles at a ratio of 3% by weight or less, and a surfactant comprising an N-long-chain acyl amino acid or a salt thereof dried by a spray dryer, which does not substantially contain 200 mesh pass particles, preferably 140 mesh pass particles. Also provided are surfactants having improved solubility and flowability, which are used for detergents and the like.

To obtain high reliability in a laser module provided with a semiconductor laser element, an optical fiber, and a convergence optical system which converges a laser beam emitted from the semiconductor laser element and couples with an incident end of the optical fiber. In a laser module, a semiconductor laser element LD, a collimator lens 19, a condenser lens 12, and an optical fiber 13 are arranged in a positional relation where a laser beam B emitted from the semiconductor laser element LD is collimated by the collimator lens 19, condensed by the condenser lens 12, and converged in an incident end. A CAN package 10 is provided as a first package which is hermetically sealed including the semiconductor laser element LD. Moreover, a second package P2 which is hermetically sealed including the incident end of the optical fiber 13 is provided.