33results about How to "Slow dehydration" patented technology

A nutritive medium for ecologically culturing plant is prepared from powdered coal ash, strew and stalk, fermented plants, and other nutritive, water-saving and rooting components. It can increase survival rate and yield of crops.

The invention discloses a composite gel for preventing spontaneous combustion of coal, which comprises the following ingredients in percentage by weight: 5 to 8 percent of base material, 2 to 5 percent of accelerating agent, 6 to 9 percent of aggregate material, 0.5 to 3 of water-retaining agent and the balance of water. The base material is water glass, the accelerating agent is sodium bicarbonate, the aggregate material is diatomite, and the water-retaining agent is salt-resistant highly-water-absorbent resin. The salt-resistant highly-water-absorbent resin is made by aqueous solution polymerization or reverse-phase suspension polymerization, and has a water absorbency of 1250 to 1355 g<g> and a salt absorbency of 100 to 120 g<g>. The produced gel is excellent in leak stoppage, oxygen insulation, temperature drop and retardancy, has good fluidity and strong moisture-retaining property and can slow water loss. The gel products with different gelling time are made by adjusting the proportions. The gel is convenient and flexible in use, has strong adaptability, and can be widely applied to various high-risk and self-combustible coal areas.

The invention provides a water body silt cleaning and harmless treatment and deposal system, which comprises a silt suction and conveying device, a harmless treatment device and a dewatering treatment device in sequential connection through a silt conveying pipeline, wherein the silt suction and conveying device comprises the following parts including a silt suction unit, a first sensor, a second sensor and an intelligent control unit; the harmless treatment device is a rotating impeller driven by a driving motor; the dewatering treatment device is a filtering bag. The invention further provides a water body silt cleaning and harmless treatment and deposal method. The water body silt cleaning and harmless treatment and deposal system provided by the invention is combined with the process; the pollution on the peripheral water body in the suction process can be reduced; the dispersion degree of the silt is improved; good mixing of silt and added chemicals is realized; the treated mud cake has high dryness, can be used for reinforcing embankment and can also be conveyed out to be used for as filling soil or greening soil.

The invention discloses a quasi-colloid valve-regulated lead acid storage battery. The storage battery comprises a battery jar and a battery cover arranged on the battery jar, a positive plate and a negative plate are arranged in the battery jar, an AGM separator is arranged between the positive plate and the negative plate, and a colloidal electrolyte protective layer is arranged above the positive plate, the negative plate and the AGM separator in the battery jar. The quasi-colloid valve-regulated lead-acid storage battery has the advantages of slow dehydration, relatively stable electrolyte, uneasy delamination, comparatively even grid corrosion and long service life.

The invention relates to a treatment device, and particularly relates to a rare earth treatment device. The technical problem to be solved is to provide the rare earth treatment device. The rare earthtreatment device comprises a heat insulation crucible, an electrolysis crucible, electrodes, a condensation separation device, a high-temperature purification device and a fluorine gas recovery device, wherein the high-temperature purification device is arranged at the top end of an electrolysis chamber, and the left end of the high-temperature purification device is connected with the condensation separation device; and the fluorine gas recovery device is arranged at the right end of the electrolysis chamber. The rare earth treatment device aims at solving the problem that the metal neodymium residual in the crucible after electrolysis is separated from other auxiliary electrolytic raw materials through a complex method when an existing neodymium metal treatment device is in use, and a large amount of time is consumed. The rare earth treatment device achieves the effects of thoroughly drying crystal water through a " friction wheel " slow-speed rotation, recovering fluorine gas fromoutside to prepare hydrofluoric acid for glass etching, finally recovering the auxiliary raw materials, protecting the device and creating additional value.

The invention discloses a firing technique for enhancing kiln transformation ratio of Nixing pottery, which comprises the following steps: 1) putting a dried billet into a kiln, gradually heating to 50-100 DEG C, and keeping the temperature for 24-36 hours; 2) heating to 500-600 DEG C by 55-70 DEG C an hour; 3) heating to 750-850 DEG C by 90-110 DEG C an hour, closing the air holes of the kiln, and adding the kiln transformation material into the kiln; 4) heating to 1080-1150 DEG C by 90-110 DEG C an hour, wherein the heating speeds of the heating tubes are sequentially lowered from bottom to top in the kiln; and 5) cooling, and taking out the fired billet. In the high-temperature firing stage, the temperature difference appears in the kiln, so that the atmosphere of the reduction reaction is more violent; and the temperature is raised once an hour, so that the temperature in the kiln is changed, thereby enhancing the kiln transformation ratio.

The invention discloses a method for drying honeysuckles. The method includes placing screened fresh honeysuckles into color-protecting solution; laying the honeysuckles on stainless steel screen cloth after the color-protecting solution on the honeysuckles is drained, and placing the stainless steel screen cloth in a drying chamber of a heat pump drying machine; setting the temperature of the drying chamber at 40-60 DEG C, setting an air speed of the drying chamber at 1-2.5m / s and setting the concentration of oxygen in the drying chamber at 5-21%; filling the drying chamber with nitrogen for 3-5 minutes at intervals of 20-30 minutes in drying procedures, keeping the required concentration of the oxygen in the drying chamber unchanged, and drying the honeysuckles for 6-10 hours to obtain the honeysuckles which are dried by the aid of heat pumps; placing the screen cloth with the honeysuckles into a microwave generator after the honeysuckles are dried by the aid of the heat pumps, and drying the honeysuckles by the aid of microwaves until the moisture contents of the honeysuckles are lower than or equal to 12%; spreading the honeysuckles in cool, clean and ventilation positions to temper the honeysuckles; loading the honeysuckles in compound zip-lock bags, and filling the insides of the bags with nitrogen so that the concentration of oxygen in each bag is lower than or equal to 5%. The drying chamber of the heat pump drying machine is preheated for at least 30 minutes before the stainless steel screen cloth is placed in the drying chamber. The method has the advantages that a manufacturing process is simple, the cost is low, and the quality of products are stable; a brightness value L of the honeysuckles manufactured by the method is larger than 60, the total phenol content of the honeysuckles is higher than 0.5%, a chlorogenic acid loss rate is lower than 20%, and the method has obvious merits, an important application prospect and high popularization utilization value.

The invention discloses a mining fire extinguishing material additive and application of the mining fire extinguishing material additive. The mining fire extinguishing material additive is prepared from, by weight, 40-80 parts of silicate materials, 0.1-5 parts of tackifier, 1-10 parts of dispersing agent, 5-20 parts of surfactant, 1-10 parts of suspending agent, 1-10 parts of super absorbent polymer and 1-10 parts of diluter. The mining fire extinguishing material additive has the advantages of being prepared from the easy-to-obtain raw materials, and being low in cost, easy to implement, good in gelatination effect, high in water retaining capacity, low in water loss speed, applicable to being added into coal ash, yellow mud, white mud and other underground coal mine filling grouting materials and excellent in fire preventing and extinguishing performance.

The invention relates to a preparation method of one-dimensional alumina fibers through a hydrothermal-flux technology and pertains to the technical field of inorganic chemical material preparation. The invention adopts water soluble inorganic aluminum salt as raw material and inorganic base or inorganic acid as precipitator; amorphous aluminium hydroxide deposit is first prepared by a normal temperature synthesis method and then added into water solution of inorganic morphology control agent for hydrothermal reaction to obtain an intermediate product of one-dimensional boehmite (gamma-AlOOH)which is then mixed with the flux so as to obtain the one-dimensional alumina fibers with the diameter of 10-100 nm, the length of 0.5-10 Mum, the length-diameter ratio of 50-200, regular morphology and good crystallization. The invention has simple technology, low cost and high additional value, and is easy to be popularized industrially. The one-dimensional alumina fibers prepared by the invention have excellent performance, high additional value and are capable of being applied to the industries of aluminium alloy, ceramic, plastic, rubber, etc., as reinforcing materials.

The invention relates to an adhering type water-based fire extinguishing agent for a vertical surface solid fire. A formula of the fire extinguishing agent comprises 3-10% of one or more than two of potassium acetate, potassium bromide, potassium oxalate or potassium bicarbonate, 0.1-0.5% of a non-ionic surface active agent, 1-5% of sodium carboxymethylcellulose, 1-5% of sodium silicate, 0.5-2% ofsodium polyacrylate, 0.1-0.3% of a calcium-magnesium ion complexing agent and the balance water. The fire extinguishing agent will greatly improves the fire extinguishing efficiency of the vertical surface solid fire.

The invention discloses a method for grouping tobacco leaf raw materials in a cigarette leaf group formula, which is based on the leaf surface density of tobacco leaves of each grade. The present invention adopts the leaf surface density index in the quality characteristics of tobacco leaves as the key index of the leaf group formula grouping, overcomes the fact that the existing methods mainly rely on manual decision-making experience, lack of more reliable sensory and chemical evaluation guidance basis, and design targeted The key process parameters of the silk-making process further exert the quality level of the processing technology, stabilize and improve the quality of cigarette products; and the leaf surface density of tobacco leaves is an indicator that is easy to obtain results among the many quality characteristics of tobacco leaves, and has strong operability .

The invention discloses a foam producing agent for wet-type dust collection. According to the weight percentage, the foam producing agent for the wet-type dust collection comprises: 0.2%-6% of lauramide propyl glycine betaine, 0.15%-0.3% of hexadecyl tri-methyl ammonium bromide, 0.4%-1.3% of fatty alcohol-polyoxyethylene ether sodium sulfate, 1%-2% of sodium dodecyl benzene sulfonate, 0.2%-0.8% of dodecyl benzene glycine betaine, 0.2%-0.9% of fatty acid glycerolipid, 0.4%-2% of potassium polyacrylate, 1.5%-2.4% of perfluor octyl sulfo tetraethyl ammonium salt, 0.5%-1.5% of sucrose fatty acid ester, 0.3%-1.2% of diocytyl sulfo sodium succinate, and the balance is water. The foam producing agent for the wet-type dust collection is capable of cohering the dusts on the ground for a long time, avoiding the dusts from flying along with the wind because of the drying ground, and performing the collecting function to a duster for a long time. The foams produced by the foam producing agent for the wet-type dust collection have good biological degradability, and both the environmental protection coefficient and the safety coefficient are high.

Provided is an industrial two-layer fabric satisfying basic characteristics of a fabric, such as rigidity, wear resistance, dewaterability, mark suppression, and low water retention for reducing the amount of water retained. The industrial two-layer fabric pertaining to the present invention has at least a first structure and a second structure in the weave repeat thereof, the first structure being formed by a combination of two upper-surface-side warps and a single lower-surface-side warp, the second structure being formed by a single upper-surface-side warp and a single lower-surface-side warp, the first structure and the second structure being disposed adjacent to each other, the upper-surface-side warps in the first structure being formed by a warp binding yarn having the function of binding an upper-surface-side fabric and a lower-surface-side fabric, the combination of two upper-surface-side warps forming the first structure being disposed adjacent to each other and constitutinga partial rib weave at the surface of the upper-surface-side fabric, the diameter of the lower-surface-side warp being larger than the diameter of the upper-surface-side warp forming the first structure, and the upper-surface-side warp in the second structure being formed by a flat warp.

The invention relates to extinguishing material for coal mine and a production method thereof and belongs to the field of coal mine materials for fire preventing and extinguishing. The extinguishing material is made by mixing well 5-15wt% of attapulgite, 1-5wt% of salt-resistant super-absorbent polymer and water. Preparation of the salt-resistant super-absorbent polymer includes: adding 3 parts of acrylic acid into an ice bath, neutralizing with sodium hydroxide, adding 4 parts of acrylamide to from a monomer, and sequentially adding potassium peroxodisulfate accounting for 0.25% of the total weight of the monomer and N, N-methylene bisacrylamide accounting for 0.25% of the total weight of the monomer; heating a water bath to 70 DEG C, allowing for reaction for 7h, and filtering and drying the cooled reaction product. Aggregate using the attapulgite as colloid is fine in suspendability and large in specific area, the obtained colloid is remarkably uniform and long in shelf life.

The invention discloses a gasified ash gel fire preventing and extinguishing material as well as a use method and an application thereof, and belongs to the technical field of fire preventing and extinguishing materials. The fire preventing and extinguishing material is prepared from the following raw material components in percentage by mass: 0.25%-0.5% of a dispersion suspending agent, 1%-1.66% of a gelling agent, 1%-2% of a coagulation accelerator and the balance of ash slurry, wherein the ash slurry is prepared by mixing gasified ash and water, the water-ash mass ratio of the gasified ash to the water is 2:(0.4-2), and meanwhile, the invention further provides the use method and the application of the material. According to the fire preventing and extinguishing material, the optimal material ratio is developed, the fire preventing and extinguishing level of a goaf is comprehensively improved, the fire preventing and extinguishing cost is greatly reduced, the reliability, pertinence and effectiveness of the fire preventing and extinguishing technology are improved, and huge economic benefits and social benefits are achieved.