52results about How to "Generation of effective control" patented technology

The invention discloses a five-double full-dry method crushing production line and processing method for high-quality sand aggregates. The production line comprises a material pretreatment system. A discharge port of the material pretreatment system is connected with a feed port of double-impact crushing equipment of a fine coarse aggregate processing system, a discharge port of the material pretreatment system is connected with a primary classifier, and a discharge port of the primary classifier is connected with a finished product screening and proportion adjusting circulation system. A super-particle-size material outlet of the finished product screening and proportion adjusting circulation system is circularly connected to a feed inlet of double-speed double-frequency crushing sand making equipment. The fine sand aggregates are connected to corresponding finished product bins or are circularly connected to the feed inlet of the double-speed double-frequency crushing sand making equipment, and multi-stage powder selecting equipment is arranged below a fine sand outlet. According to the production line, the production line with multi-stage desliming, double-countering-impact crushing, double-vertical-shaft impact crushing shaping sand making, multi-stage powder selecting and multi-stage circulation is adopted, so that the system productivity and the quality of the finished sand aggregates are improved effectively, the efficient and energy-saving effects are realized, and the practicability is high.

The invention provides a dry type filtration dust removal system for a roadway driving working face. Both an extraction fan (5) and a dry type filtration dust remover (4) are fixedly installed on a support (7). The support (7) is arranged on the upper side of a belt conveyor (10) in a nested mode and installed on the upper side of a moving frame (8). The extraction fan (5) is sequentially connected with the dry type filtration dust remover (4), a negative-pressure air barrel (3) and a suction hood (2). The negative-pressure air barrel (3) is suspended on the top of a roadway (1) through a monorail crane (9). The suction hood (2) is supported on a rocker arm (13) at the rear end of a cutting head (14) in a surrounding mode. The dust removal system is high in dust removal efficiency, does not occupy independent moving power, and can operate in cooperation with a driving procedure.

The invention belongs to the field of chemical industry, particularly relates to a method for preparing high dispersing white carbon black with ammonia precipitation method. The method comprises the following steps of: (1) simultaneously adding ammonium hydrogen carbonate, water glass solution and dispering agent to a reaction kettle in a certain proportion, and quickly heating till the temperature of 70-90 DEG C; (2) carrying out heat preservation and stirring, controlling the stirring speed to be 60-100 rpm, simultaneously discharging ammonia gas in the reaction process, and obtaining loose precipitate white carbon black after finishing the reaction; (3) mixing the ammonia gas generated in the reaction and the smoke gas carbon dioxide generated in the process of preparing the water glass solution and simultaneously absorbing with water, and obtaining ammonium hydrogen carbonate solution after the reparation; (4) filtering the obtained precipitate white carbon black after the reaction under the condition of vacuum, wherein the filtrate is recycled to prepare sodium carbonate, and obtaining the high dispersing white carbon black after washing, drying, crashing and filtering the filter cake. The method is simple in technology and environment-friendly, thereby reducing the production cost and improving the product performance; and the quality is stable and reliable.

The invention discloses a system for recycling batteries. The system comprises a combustion chamber of a rotary kiln, a secondary combustion chamber and flue gas purification equipment; the combustion chamber of the rotary kiln comprises a first combustion area and a second combustion area; the secondary combustion chamber is communicated with the combustion chamber of the rotary kiln; the flue gas purification equipment is communicated with the secondary combustion chamber. By the aid of the system for recycling the batteries, the batteries are combusted in the first combustion area at the temperature ranging from 100 DEG C to 150 DEG C for 30 to 60 minutes, so that sealing rings of the batteries are sufficiently damaged by means of pyrolysis, hydrogen and organic solvents in the batteries are released and are discharged by negative-pressure devices, and the batteries can be effectively prevented from being exploded at a high temperature; then the batteries are combusted in the secondary combustion area at the temperature ranging from 300 DEG C to 500 DEG C, first flue gas generated when the batteries are combusted is completely combusted in the secondary combustion chamber at the temperature ranging from 1200 DEG C to 1350 DEG C to form second flue gas, the second flue gas is purified by the flue gas purification equipment to form purified gas, and the purified gas is exhausted into the atmosphere. The system for recycling the batteries has the advantages that the batteries are prevented from being exploded, and the system is safe in operation. The invention further provides a method for recycling the batteries.

The invention provides a curing agent for oily sludge incineration innocent treatment and a usage method of the curing agent. The curing agent comprises, by mass, 1-20% of cement, 1-20% of a fluxing agent and 60-98% of water. The curing agent which accounts for 10-50% of the mass of the oily sludge is added in the oily sludge, the flying ash generated by the oily sludge incineration can be restrained effectively, the incinerated products are agglomerated, and the effect of slagging control is achieved. The curing agent is low is cost, convenient to use and capable of solving the secondary pollution problem caused by the oily sludge incineration effectively, so that the heating energy can be used fully and cleanly and furnace slags produced by the oily sludge incineration can be used for paving roadbeds and serve as building materials, and the harmless and recycling treatment of the oily sludge is achieved truly. Besides, the curing agent is beneficial to environmental protection and has good economic and social benefits.

The invention provides a method for preparing lurasidone with high purity and high yield. On the basis of an existing lurasidone preparation method, a small quantity of specific protic solvent is added in the preparation process of (R,R)-3a,7a-9H-isoindole-2-1'-[4'-(1,2-benzisothiazole-3-yl)] piperazine mesylate, so that the reaction rate is greatly increased, the time is shortened to 3 h from 23 h in the prior art, the yield is increased from 82% to 90%, the total yield is up to 71%, and the prepared finished product has the consistent quality with original drugs.

The invention discloses a dust-free automatic discharging device for graphite crucibles. The dust-free automatic discharging device for the graphite crucibles comprises a material suction crushing mechanism and a material collection filtering mechanism which are connected with each other, wherein the material suction crushing mechanism comprises a plurality of material suction pipes, crushers are arranged below the material suction pipes, when the material suction pipes are inserted into the corresponding crucibles, the crushers break and crush graphite in the crucibles, and the crushed graphite is sucked in by negative pressure in the material suction pipes and transferred to the material collection filtering mechanism; and each crusher comprises a stirring rod, the tops of the stirring rods are connected with a power mechanism, the bottoms of the stirring rods penetrate through the material suction pipes and then are located below the material suction pipes, crushing blades are arranged at the bottoms of the stirring rods, and the power mechanism drives the stirring rods and the crushing blades to rotate so as to crush the graphite. The dust-free automatic discharging device for the graphite crucibles is high in material suction efficiency and stable in product quality.

The invention discloses a system and method for processing rare earth concentrates. The method comprises the steps that the rare earth concentrates, sodium carbonate, a chloridizing agent, a vulcanizing agent and a bonding agent are blended in a blending device; then mixed materials are prepared into rare earth green pellets in a forming device; the rare earth green pellets are fed into a rotating packed bed to be calcinated to obtain hot pellets; then the hot pellets are subjected to water quenching, and calcium chloride is added for wet ore grinding in an ore grinding device to obtain ore pulp; and the ore pulp is subjected to filtration or suction filtration in a solid-liquid separation leaching device to obtain filter residues and a chloridized rare earth solution. By adoption of the system and method for processing the rare earth concentrates, the problems that in the prior art, three waste pollution is serious, caustic soda is large in dosage and high in cost, and a large amount of acid is needed for dissolution in subsequent processes are solved.

The invention relates to a method for welding an outgoing line terminal of a nuclear power half-speed turbine generator. The method solves the problem of the prior art that since the process of manual metal-arc welding or gas shielded arc welding or the like is adopted for welding an outgoing line terminal, the welding deformation is serious, the welding size is difficult to guarantee, welding lines are difficult to form, the welding quality is poor and the welding is difficult in passing flaw detection at a single time. The method comprises the following steps: 1, preparing materials; 2, scribing; 3, assembling; 4, performing spot welding; 5, installing a tool fixture; 6, preheating before welding; 7, performing metal-inert gas welding (MIG) on a workpiece to be welded, wherein the welding current is 370-420A, the welding voltage is 24-34V, the welding speed is 350-500 mm/min, the protection gas is high-purity argon having the purity of more than 99.996%, and the flow rate of gas is 10-15 L/min; 8, performing modification welding; and 9, performing non-destructive inspection. The method is used for welding an outgoing line terminal of a nuclear power half-speed turbine generator.

The invention relates to a production method for a deep drawing high-carbon steel wire rod. Steel comprises the following chemical components of 0.69-1.02% of C, 0.15-0.35% of Si, 0.40-0.90% of Mn, less than or equal to 0.35% of Cr, less than or equal to 0.025% of P, less than or equal to 0.025% of S and the balance iron and inevitable impurities. Special casting powder and a large-chamfer crystallizer are adopted for continuous casting, high temperature is adopted for high-speed wire heating, the heat preservation time is controlled, the burning loss of the surface of a steel billet in a heating furnace is increased by adopting oxidizing atmosphere, and network cementite on the surface of the wire rod is smaller than or equal to 0.5 grade.

The invention discloses a water quenching device for electric furnace slag. The device comprises a main shell, a crushing and cooling unit, a heat exchange unit and a dehydration unit, and is compactin structure, simple and reliable, wherein the main shell is provided with a water cavity and a main material inlet located below a liquid level, the crushing and cooling unit is used for crushing andcooling liquid-state steel slag from the main material inlet, the crushing and cooling process is located below the liquid level so as to effectively control the generation of water vapor, the heat exchange unit controls the water temperature of the water cavity so as to further control the generation of steam, and the dehydration unit is used for dehydrating the water-quenched slag deposited atthe bottom of the water cavity so as to obtain dehydrated finished steel slag, so that the generation of water vapor can be effectively reduced so as to achieve the purposes of water saving and emission reducing.

The invention relates to a method of treating rare earth ore concentrate by adopting a revolving bed. The method comprises the following steps: compounding rare earth ore concentrate, sodium carbonate, a chlorinating agent and an adhesive according to weight proportion, and uniformly stirring to obtain a mixed material; forming the mixed material in palletizing manner to prepare water-containing green pellets; drying or airing the water-containing green pellets to obtain dried rare earth pellets; adopting the revolving bed to roast the dried rare earth pellets to obtain thermal-state pellets; water quenching the thermal-state pellets, and adding calcium chloride for wet-type ore grinding to obtain ore pulp; and filtering or carrying out suction filtration on the ore pulp, and carrying out elution to separate solid and liquid so as to obtain filter residue and rare earth chloride solution. According to the method, plenty of alkali is not needed during the roasting process, and when rare earth is extracted from the roasted product, water can be directly added for leaching without introducing acid or alkali, so that the cost is low, the economic benefit is excellent, and the environmental protection index is excellent. In addition, the invention further relates to a system capable of adopting the method to treat rare earth ore concentrate.

The invention relates to a novel intermediate compound (a compound as shown in a formula 2A) of siponimod, a synthesis method of the novel intermediate compound, and a method for synthesizing siponimod by adopting the compound as shown in the formula 2A. Specifically, 3-trifluoromethyl-4-halogenated benzoic acid or 3-trifluoromethyl-4-halogenated toluene is taken as an initial raw material and is subjected to reduction, bromination, coupling, substitution and reduction to obtain a compound as shown in a formula 2A, and R is Boc or Ac.