196results about How to "Good technical and economic effect" patented technology

This invention relates to a method for manufacturing bioorganic fertilizer. The bioorganic fertilizer is manufactured by: mixing sugar industry waste, breeding industry waste, oil-processing waste, phosphoric fertilizer, trace element fertilizer and silicon fertilizer, and performing aerobic fermentation and post fermentation. The effective components of the bioorganic fertilizer are: organic matters (greater than or equal to 30%), N, P and K (greater than or equal to 8%), beneficial microorganisms (greater than or equal to 200,000,000/g), active silicone (greater than or equal to 5%), magnetic components (0.25%), and Fe, Zn and Mo (0.5-1%). The bioorganic fertilizer has abundant raw material sources, and is environmentally friendly.

The invention discloses a surface modification method for nano calcium carbonate, which is characterized by comprising the following steps of: adding inorganic alkali into nano calcium carbonate slurry, uniformly stirring, heating the slurry, adding fatty acid and performing surface modification. The method comprises the following specific steps of: adding a certain amount of nano calcium carbonate slurry into a reaction kettle, adding 0.00004 to 0.00040mol of inorganic alkali into 1g of CaCO3, and uniformly stirring; heating to the temperature of between 75.0 and 90.0 DEG C, adding 0.00005 to 0.00035mol of fatty acid or fatty acid salt into 1g of nano calcium carbonate (CaCO3) slurry, reacting, and continuously stirring for 30 to 120 minutes; and after surface modification reaction is finished, cooling, filtering, washing, drying and grinding the slurry to obtain the nano calcium carbonate subjected to surface modification. The method is simple and practicable, a modifier can form a uniform and complete coating layer on the surface of the nano calcium carbonate, and the modified product has a good application effect in polymer such as silicone sealant, polyvinyl chloride (PVC) paste resin and the like.

A composite admixture for cement or high-performance concrete and a preparation method thereof. The admixture comprises silicon manganese slag, slag, limestone, furnace slag or fly ash, and grinding aids, and the mass ratios are: 50-70 of silicon-manganese slag, 10-20 of slag, 8-15 of limestone, 10-15 of furnace slag or fly ash, and 0.5 or 2 of grinding aids. The preparation method comprises: adding the raw materials according to the ratios into a ball mill, grinding till the grinding fineness meets that the Blaine specific surface area is not less than 400 m2/kg or 450 m2/kg so as to obtain the silicon manganese slag-based composite admixture for cement or high-performance concrete. The preparation of the admixture can use a large amount of industrial waste residues - silicon manganese slag discharged from the production of silicomanganese alloy, and the admixture is prepared with a proper amount of slag, limestone, furnace slag or fly ash, and a small amount of grinding aids, which has remarkable economic effect, and outstanding social benefits and environmental benefits.

The invention discloses a method for coal mining to the greatly oblique coal layer, comprising two steps: designing the method and back producing technique, placing slit flexible shielding support in the coal layer of 8-10m and deciding return airway and cutting point; the back producing technique includes enlarging airway, installing support, put down support and desinence of working face, etc. The method has simple operational steps as well as remarkable economic benefit.

The invention relates to a mill run desiliconizing method for the mixed alumyte, in particular to a mill run desiliconizing method for the mixed alumyte with the gibbsite. The invention is characterized in that: smashing the mixed alumyte, adding the water to make slurry and make the ore smash, abstracting the coarse fraction mineral and the fine fraction mineral in the products by means of a screen separation craft or a grade craft, fine grinding the coarse fraction mineral which is abstracted, then mixing the milling grinding products and the fine fraction mineral which is abstracted by means of the screen separation craft or the grade craft, and carrying through a floatation. After the invention is carried into execution, the mill run desiliconization of the mixed alumyte with the gibbsite in middle or low grade is realized; the invention has a higher coefficient of recovery under the condition of guaranteeing A/S ratio of the ore concentrate. The invention has the advantages of simple and steady technological process, strong operability, capability of enlarging the resource supply of alumyte and providing a technical support for economy when the alumyte resources are needed, and important economic meaning and a social meaning for the sustainable development of the alumina industry.

A blast furnace pressing-in grouting lining making construction method comprises the following: a first step of drilling grouting holes (2) in a furnace casing (5) of the damaged part of the blast furnace, inserting a grouting short pipe (4) with a valve (9) into each hole, and then welding the grouting short pipe (4) and the furnace casing (5) together; a second step of butting the output pipe of a pulp press and the grouting short pipe with the valve (9) on the furnace casing together; a third step of pressing stirred slurry (12) into the blast furnace through the pulp press, after reaching the preset slurry amount, the pulp press stopping pressing, opening the feedback valve of the pulp press, and then disassembling an output pipe (8) of the pulp press from the grouting short pipe (4) after closing the valve (9) of the grouting short pipe (4); a fourth step of circulating the second step until grouting is finished for all grouting holes. The blast furnace pressing-in grouting lining making construction method not only improves the efficiency and quality of blast furnace maintenance but also achieves good maintenance effect under both the delay status of the blast furnace and the non-delay status of the blast furnace.

The invention relates to a method for preparing an Mg-Li alloy by vacuum synchronous thermal reduction, belonging to the novel technical field of preparing magnesium alloy materials. The process course comprises the following steps of: preparing reactants according to stoichiometry of reduction reaction; pulverizing solid reactants and uniformly mixing; pressing the reactant powder into blocks and placing the blocks into a reduction tank, and carrying out thermal reduction reaction at the vacuum degree of 1-20Pa and the temperature of 950-1,500 DEG C; collecting alloy steam generated by reaction; and condensing the alloy steam to obtain an Mg-Li alloy in a condensed state. In the invention, the oxides of metals Mg and Li or a precursor of the oxides are utilized as raw materials, the synchronous reduction of the metals Mg and Li is realized through vacuum thermal reduction to prepare the Mg-Li alloy directly. The alloy preparation process has short route, wide sources of the raw materials, high material utilization rate, favorable economy and manufacturability, high efficiency and energy saving.

The present invention relates to underground water taking and collecting method, and is new engineering structure for taking percolation water. The present invention features that the collecting well is embedded into base rock stratum for at least 5 m, controlled directional percolation holes are drilled into grit stratum under the base rock stratum around the well, and filters are set in the hole parts corresponding to the water bearing stratums. The said engineering structure makes the taken underground water need no further processing in the water producing system, and has the merits of both radiation well and natural filtering bed percolation well, including simple engineering structure, being safe and reliable, no damage to ecological environment, etc.

The invention provides a method for producing molten iron with high-phosphorus and low-iron refractory iron ore, comprising the following steps: taking high-phosphorus and low-iron refractory iron oreas raw material; taking wood coal as reducing agent; oxidizing roasting; directly reducing; magnetically separating and separating; melting and separating; dephosphorizing molten iron; and obtainingthe low-phosphorus molten iron. The method can process the extremely refractory iron ore with high P content, high S content, high SiO2 content and low iron level, has high ore iron recovery rate, completely solves the difficulties of the high-phosphorus and low-iron refractory iron ore such as ore selecting and smelting, removing coke, and eliminating high-energy consumption and high-pollution technical process such as ore selecting, sintering, palletizing, coking, etc. Phosphorus-containing slag can realize resource comprehensive utilization. A great number of experiments and semi-industrialproduction demonstrate that the technical economic effect of the method is remarkable and effectively solves the current problem of ore resources supply-demand contradiction in China.

The invention provides a method for mineral dressing and silicon removal of bauxite, and particularly relates to a method for mineral dressing and silicon removal of diaspore type bauxite. The method comprises an ore-grinding grading process and a flotation silicon removal process, and is characterized in that: the product of ore grinding is graded for two or three times, wherein a double-layer high-frequency vibrating screen is used at the last time of grading; and among three products obtained by grading of the double-layer high-frequency vibrating screen, large-size grains are reground and re-dressed, medium-size grains are used as rough concentrates or enter the flotation system for concentration, and small-size grains enter the flotation system for flotation silicon removal. The method has the advantages of effectively solving the technical problem that the grinding machine is high in energy consumption and low in treating capacity, the problem that the grain size of the flotation materials is small and other problems, better performing flotation silicon removal of bauxite, obtaining bauxite concentrates with qualified grade, along with good process technique and economic indexes.

The invention relates to a method for coupling an MTO process with the front-end depropanization process of naphtha and propane pyrolysis and mainly solves the problems that the existing coupling technology is high in pyrolysis raw material cost, low in propylene yield, long in MTO device separation flow and high in equipment engineering investment. The method has the advantages that the MTO process is coupled with the front-end depropanization process under the premise that the total yield of ethylene is unchanged and by the aid of the existing separation equipment of an ethylene device, methanol and propane are used to replace most of naphtha, the yield of the propylene is increased by 38500-190200 tons/year, the use amount of the naphtha is reduced by 2095200-3842300 tons/year, product and raw material costs are saved by 1.267-2.932 billion yuan per year, the problems above are well solved, and the method is applicable to the production of low-carbon olefin.

The invention provides a process and system for recycling high-chloride high-organic-matter wastewater; according to the process, in a set of system, an inorganic salt suitable for a snow melting agent is produced through a high-temperature cyclic oxidation process; organic matter self heat quantity is depended, an auxiliary heat source is externally added, and an organic matter is decomposed with low cost; at the same time, a high-temperature secondary combustion room is designed, and dioxin is decomposed; wastewater is subjected to atomized quenching concentration by using high temperature flue gas, and hazardous waste recycling treatment is realized with low cost; the process is especially suitable for organic wastewater containing sodium chloride, calcium chloride, magnesium chloride and other high-chloride salts, but also can be used for recycling disposal of other high-salt high-concentration organic wastewater, and has great economic and social benefits.

The traditional waste water treating process with added denitriding and dephosphorizing functions includes: throwing chemical dephosphorizing agent in the last section of settling pit, water outlet of the primary settling tank, or the aerobic section and outlet of the aerobic pond, and refluxing 30-60 % of active sludge and partial residual sludge to the primary settling tank to make traditional waste water treating process possess dephosphorizing function; connecting serially aerobic zeolite biofitering pond to the last section of the second settling pond to eliminate ammonia nitrogen with zeolite and chemical and biological synergistic regeneration to maintain the stable adsorption capacity of zeolite. The present invention is suitable for upgrading waste water treating yard, and has low cost.

The invention discloses an integrally-poured building house construction method. The integrally-poured building house construction method includes the following steps of (1) preparation before construction; (2) the pouring process; (3) the curing process; and (4) treatment after construction. According to the integrally-poured building house construction method, a house is subjected to integratedpouring construction. According to the construction method, compared with a traditional construction method, the construction period can be shortened by one month, the construction quality and efficiency are improved, lots of formwork cost is saved, the construction cost is lowered to a very large extent, and a good technological and economical effect and high applying and popularizing value are achieved.

The invention discloses a T-joint steel pipe pole with special-shape crossarms. The T-joint steel pipe pole comprises top crossarms, upper crossarms, middle crossarms, lower crossarms, T-joint poles, a pole tower body, crossarm insulators, wind-yaw-resistant insulators and movable crossarm hoops. The crossarms and the T-joint poles are mounted on the pole tower body and are spatially designed layer by layer to form certain included angles. The crossarm insulators and the wind-yaw-resistant insulators are mounted at ends of the crossarms. Two pairs of hoop lead crossarms are arranged above and below section points of upper lead crossarms and middle lead crossarms in the lateral direction of newly added T-joint poles respectively, and movement and angle adjustment of the T-joint poles are facilitated. The length and the rotation angles of the crossarms are calculated according to electrical distance gap of the T-joint tower. The problem that electrical safety distance is spatially insufficient for circuits during T-joint is solved by the newly added T-joint poles, and the T-joint steel pipe pole has the advantages of simplicity in mounting, excellent single-pole indicators, high economic efficiency of synthesis technique and the like, and is worthy of popularization and application in construction of high-voltage alternating-current two-circuit T-joint lines or long-term T-joint pole reservation.

The invention relates to a tunnel empty-hole mud vibration-reduction-control blasting method capable of reducing vibration and noise. According to the method, hole drilling is positioned according to a drilling and blasting arrangement diagram; before powder charging, high-pressure air is used for sweeping holes, rock emulsion explosives and non-electric second-delay detonators are respectively selected, the powder charging holes are charged with powder according to a vibration reduction blasting parameter design list, the periphery holes are charged with the powder at intervals, the rest of the blastholes are continuously charged with the powder, the powder are charged to the bottoms of the holes, tamping is used for plugging the holes in place, and the empty holes are filled with plastic bags with mud; and the detonators are connected in place according to requirements, equipment and persons are all evacuated outside the safe distance, and detonation is carried out after the equipment and the persons are confirmed to be safe. The method has the advantages that the hole bottom blasting force can be enhanced, the blasting footage can be increased, particularly, reflection, refraction and absorption of the blasting shock waves can be strengthened, the process of shock wave->attenuating->stress wave->attenuating->seismic wave can be accelerated, the blasting vibration and noise can be greatly reduced, the blasting vibration speed is detected to be lees than 5cm/s, the phenomenon that people are disturbed can be greatly reduced, and the good technical economic effect can be obtained.

The invention provides white carbon black capable of improving the processing performance of rubber and a preparation method of the white carbon black. The preparation method comprises the following steps: (1) heating water, adding water glass, and mixing the water with the water glass to obtain a reaction base solution, wherein the temperature in the whole process does not change; (2) adding acidand water glass into the reaction base solution for mixing and reaction, wherein the reaction temperature and the concentration of the water glass are constant, and are equal to the reaction temperature and the concentration of the water glass in the reaction bottom solution; (3) adjusting the pH of a reaction system; (4) adding acid and water glass for mixing and reaction, wherein the pH of thereaction system is 7.0 to 10.0 and is constant, and the reaction temperature is constant and is equal to that of the reaction base solution; (5) adding acid to adjust the pH till the pH is equal to the pH of aging reaction and the temperature is constant and equal to that of the reaction base solution; (6) carrying out aging reaction on white carbon black suspension under a condition that the temperature is equal to that of the reaction base solution, and then carrying out solid-liquid separation to obtain the white carbon black. The white carbon black provided by the invention can improve theprocessing performance of the rubber on the basis of not reducing the mechanical property of the rubber.

A magnesium alloy compound forming method belongs to the processing field of magnesium alloy which is characterized in that the invention heats a cast acquired by a casting method for 350 to 425 DEG C and simultaneously heats an extruding die to 232 to 425 DEG C and then maintains temperature for 25 to 120mins; then extrudes a performing extruding proximate matter with a two-dimensional characteristic of the cast by an extruding speed of 1.2 to 12m/min; cutting a mould pressing blank material with a same volume as the cast, heats the mould pressing blank to 290to 400 degrees and maintains the temperature for 25 to 120mins after a die is heated to 232 to 400 degrees, finally carries through one-time mould pressing by a deformation speed of 2 to 200mm/s to acquire a final product. The magnesium alloy cast produced by the invention can meet not only meet the requirement for shape of the product, but also improve the comprehensive performance of the magnesium alloy cast and can simultaneously lead the comprehensive performance of the product to be more uniformly. The invention has the advantages of reliable technical quality, high efficiency, little energy consumption, high quality and high technical yield. The invention is suitable for batch productions on the structural component products with extruding and mould pressing characteristics.