37results about How to "Not prone to clumping" patented technology

The invention discloses a high-molecular copolymer dispersant for paint. The high-molecular copolymer dispersant is prepared by the following components in percentages by mass: 0.2-2% of an initiator, 0-2% of a chain transferring agent, 10-50% of a monomer A, 1-15% of a monomer B, 10-50% of a neutralizer, and 10-50% of water. Organic solvents are not added in a preparation process of the high-molecular copolymer dispersant, so recovery of the organic solvents is not needed, the technology is simple, the cost is low, and environment is not polluted. The paint is produced by utilization of the high-molecular copolymer dispersant, and the paint has the advantages of fast viscosity reduction speed for the powder and good viscosity reduction effects in the production process; water separation and agglomeration phenomenon of the paint does not disappear, an appropriate formula is used for preparing the paint, and after one year of storage, the water separation and agglomeration phenomenon does not disappear.

The invention discloses a road construction sediment mixer, and belongs to the technical field of road engineering equipment. The road construction sediment mixer comprises a mixing tank, wherein a feeding pipeline is arranged on the mixing tank, and a spiral conveyer is arranged in the feeding pipeline; one end of the spiral conveyer is connected with a conveying motor to drive, and the top part of the mixing tank is provided with an active shaft; one end of the active shaft is provided with an active shaft, and the other end of the active shaft is in driving connection with the main motor; the bottom part of the mixing tank is provided with an assistant rotary shaft, and one end of the assistant rotary shaft is provided with an assistant roller; the other end of the assistant rotary shaft is in driving connection with an assistant motor; the rotating direction of the main motor is opposite to that of the assistant motor; the active roller and the assistant roller are arranged to be several longitudinal branches and staggered and distributed mutually; thus the road construction sediment mixer realizes the high-efficient sediment mixing, improves the mixing speed, reduces the sediment adhesion status, prolongs the service life of the equipment, and reduces the labor burden of the worker.

The invention discloses a small-grain-diameter ABC dry powder extinguishing agent and a preparing method thereof. The preparing method includes the following steps that nano calcium carbonate, stearicacid and myristic acid are stirred, microcrystalline wax and water are added to be evenly mixed, sulfating sodium oleate is added in the stirring state, and heating, stirring, filtering, washing, drying and smashing are carried out to obtain a first material; monoammonium phosphate, monopotassium phosphate, potassium perchlorate, glass fibers and the first material are evenly mixed, and homogenization treatment is carried out to obtain a second material; hydrogen containing silicone oil and water are evenly mixed, then acetone is added to be evenly stirred, and a mixed material is obtained; and the mixed material is atomized and sprayed into the second material in the stirring state, heating and even mixing are carried out, water is removed, nanosilicon dioxide and magnesium stearate areadded, and vacuum smashing is carried out to obtain the small-grain-diameter ABC dry powder extinguishing agent.

The invention relates to the field of garbage incineration disposal, in particular to a drum type feeding device for a garbage incinerator of a circulating fluidized bed. The drum type feeding device for the garbage incinerator of the circulating fluidized bed comprises a primary feeding machine and a secondary feeding machine, wherein the primary feeding machine is connected with the secondary feeding machine through a seal leg; the primary feeding machine is positioned above the secondary feeding machine; the secondary feeding machine comprises a supporting roller, a feeding drum and a driving mechanism for driving the feeding drum to rotate; the feeding drum is supported on the supporting roller under the condition that a peripheral surface of the feeding drum is in contact to the supporting roller; the feeding end of the feeding drum is rotatably and hermetically connected with the seal leg; a plurality of spiral guide blades are arranged in the feeding drum; the radial outer ends of the spiral guide blades are fixedly connected with an inner peripheral surface of the feeding drum; and feeding space is surrounded by radial inner ends of the spiral guide blades. The drum type feeding device for the garbage incinerator of the circulating fluidized bed has the advantages that the increasing amount of the compactness of garbage is reduced along with increasing of a feeding distance, and the garbage can enter the incinerator in a loose state. The problems that materials are hardened during conveying of the existing feeding device, combustion is insufficient, and tail gas treatment cost is high are solved.

The invention discloses a method for preparing instant-soluble cationic high molecular weight polyacrylamide by a two-step method. The method comprises the following steps: (1) adding a dispersing agent to a reaction vessel containing a hydrocarbon solvent, and heating the materials to dissolve the dispersing agent; (2) adding 20 to 40% by mass of an acrylamide aqueous solution, a water-soluble initiator, and a cationic comonomer to the reaction vessel and stirring the materials to form a water-in-oil reaction system; (3) introducing nitrogen gas, and removing oxygen in the reaction system; (4) heating the reaction system to a reaction for a period of time to form primary particles of polyacrylamide; 5) adding an alcohol-water mixed solution to the reaction vessel, stirring the materials,and aggregating the primary particles of polyacrylamide to form solid particles similar to a grape bunch structure; and (6) heating and boiling to remove the alcohol and the aqueous solution, and obtaining the instant-soluble high molecular weight polyacrylamide solid. The polyacrylamide obtained by the two-step method has a faster dissolution rate when used, and is not easily agglomerated.

The invention relates to the technical field of grain drying equipment, in particular to grain production drying equipment. A feeding pipe is located above a drying box, a rotating assembly is located above the drying box, a drying assembly is located in the drying box, one end of a conveying pipe is fixedly connected with the drying box, and the other end of the conveying pipe is fixedly connected with the drying box. Grains are poured into the feeding pipe and enter the drying box, the drying assembly dries the interior, the rotating assembly turns over the internal grains, then the grains are conveyed into the drying box through the conveying pipe to be dried, so that the grains are not prone to caking, the drying efficiency is improved, and the practicability is improved.

The invention discloses an additive for stone-like paint protecting adhesive. The additive is prepared by mixing the following components in parts by weight: 70-80 parts of sodium alginate, 5-10 partsof sodium carboxymethyl cellulose and 15-20 parts of urea. The additive for the stone-like paint protecting adhesive has stable performance, does not change after storage at normal temperature for half a year, has good solubility at normal temperature and is convenient to use; the additive comprises sodium alginate, sodium carboxymethyl cellulose and urea, wherein sodium alginate has good thixotropy and thickening properties, and can be crosslinked with metal ions such as calcium to form particles with moderate softness; sodium carboxymethyl cellulose and sodium alginate play a synergistic role in thickening and suspending functions; and urea can prevent sodium alginate and sodium carboxymethyl cellulose from agglomerating during dissolution, and is easy to dissolve at normal temperatureand more convenient to use.

The invention discloses an efficient wet mixing device for vanadium-nitrogen alloy ball production. The device comprises a box body housing, one side of the box body housing is provided with a drivingmotor, one end of the driving motor is provided with a spiral stirring shaft, a connecting pipe penetrates through the upper end of the box body housing, a spraying pipe is arranged at the lower endof the connecting pipe, atomizing nozzles are symmetrically arranged on the two sides of the spraying pipe, a first bearing is arranged on the inner wall of the upper end of the connecting pipe, a liquid outlet pipe is sleeved with the first bearing, a flow meter is arranged in the liquid outlet pipe, a liquid storage box is communicated with the end, away from the connecting pipe, of the liquid discharging pipe, a liquid inlet pipe is connected with the other side of the liquid storage box, a first gear is arranged on the outer wall of the upper end of the connecting pipe, and a feeding hopper is arranged on the part, located on one side of the connecting pipe, of the upper end of the box body housing. The device has the advantages of simple structure, easy operation, wider liquid raw material spraying range and higher production efficiency, the use of the device is convenient and ingenious, and the device is suitable for wide popularization.

The invention belongs to the technical field of chemical medicine extraction equipment, and particularly relates to a multilayer resin chromatographic column which comprises a columnar shell, an uppercover and a base, wherein a big-end-up conical resin column cavity is formed in the columnar shell, a plurality of horizontal arc convex strips are vertically distributed on the inner wall of the resin column cavity, a plurality of resin columns are mounted in the resin column cavity, the lower end faces of the resin columns are porous sieve plates, flanges are arranged at the upper ends of the resin columns, and the flanges are in lap joint with the convex strips to enable the resin columns to be mounted in the resin column cavity; the porous sieve plate of the resin column on the upper layer is butted into the resin column on the lower layer; and the outer diameter of the resin column on the lower layer is smaller than that of the resin column on the upper layer. A quite high resin column in the prior art is divided into a plurality of resin columns which are separated from one another and convenient to take and replace, the resin is not prone to caking or being crushed and damaged,it can be guaranteed that the resin in each layer of resin column is evenly filled, a resin column with inactivated or damaged resin can be flexibly replaced, and convenience and flexibility are achieved.

The invention discloses a low-caking-rate water-soluble organic fertilizer retreatment process, and belongs to the field of organic fertilizers, the low-caking-rate water-soluble organic fertilizer retreatment process is characterized in that fertilizer granules are retreated, so that fiber ball nets are formed on the surfaces of the fertilizer granules, and the fiber ball nets can form isolation between every two adjacent fertilizer granules; two adjacent fertilizer granules do not touch each other under the barrier of the fiber ball net, compared with the prior art, when the water-soluble fertilizer absorbs moisture and is slightly soluble due to long-time storage or high environmental humidity, the water-soluble fertilizer is not prone to caking under the barrier of the fiber ball net, which can effectively guarante that the particle size of the fertilizer granules is not prone to large change under the slightly water-soluble condition, therefore, nutrient loss is effectively avoided, the situation that the application effect of the same number of fertilizer particles becomes poor is not prone to occurring, in addition, the fiber particles and the fiber rods are randomly distributed on the surfaces of the fertilizer particles in a disordered mode, gaps exist between the fiber particles and the fiber rods, and when the fiber net is used, the water solubility of the fiber net is not prone to being affected.

The invention discloses a raw material pretreatment process for extracting vanadium by using vanadine, and particularly relates to the technical field of vanadium extraction by using vanadine. The raw material pretreatment process comprises the steps of vanadine crushing, vanadium slag ball milling, iron removal treatment, auxiliary material addition, microcomputer batching and mixing and high-pressure balling. The vanadium is crushed, the vanadium slag is subjected to ball milling, the vanadium slag meets the qualified particle size requirement, in order to avoid dust flying, 4%-5% of water is added into a mixed material, materials can be wetted, the contact area between dressing and the vanadium slag is increased, and roasting is facilitated. According to the scheme, compared with a traditional pretreatment process, the problems of dust flying, raw material waste and serious pollution during vanadium slag processing are effectively solved, the auxiliary material is sodium salt, the materials and the sodium salt in a specified proportion are added with water and sodium carbonate for uniform mixing, waste liquid obtained after spraying of an absorption tower plays an energy-saving and environment-friendly role, so that the sodium salt is not prone to caking, the utilization rate of the sodium salt is increased, and the production cost is reduced, and applicability is achieved.

The invention discloses a two-step method for preparing instant high molecular weight polyacrylamide. The two-step method comprises the following steps: (1) adding a dispersing agent into a reaction still containing a hydrocarbon solvent, and heating so that the dispersing agent is dissolved; (2) adding 20% to 40% of acrylamide water solution in percentage by weight and a water-soluble initiator into the reaction still in the step one, stirring so that the water solution is dispersed into the hydrocarbon solvent, and thus forming a water-in-oil reaction system; (3) introducing nitrogen, and removing reaction liquid and oxygen inside the reaction still; (4) heating the reaction system until a reaction, and reacting for a period of time to form polyacrylamide primary particles; (5) dropwiseadding an alcohol-water mixed solution into the reaction still, stirring, and gathering the polyacrylamide primary particles by controlling the using amount of the alcohol-water mixed solution and theratio of alcohol to water so as to form solid particles of similar grape cluster structures; and (6) heating until boiling, and azeotropically removing the alcohol and water solution so that the instant polyacrylamide solid with high molecular weight can be obtained. The polyacrylamide obtained through the two-step method is relatively high in solution rate when in use, and is unlikely to cake.