35results about How to "Evenly prepared" patented technology

The invention discloses a high-nitrogen suspension-type liquid fertilizer which comprises the following components in percentage by weight: 50-80% of saturated mother solution and 20-50% of solid-liquid mixture. The saturated mother solution comprises the following components in parts by weight: 0-6 parts of potassium humate, 20-50 parts of nitrogen fertilizer, 5-20 parts of potassium fertilizer and 5-30 parts of water. The solid-liquid mixture comprises the following components in parts by weight: 5-20 parts of phosphate fertilizer, 0.2-1 part of minor element raw material, 70-100 parts of water and 5-26 parts of assistant. The suspension-type product has the advantages of excellent stability, excellent uniformity, excellent flowability, no stratification or precipitation after long time, high cost benefit and lower cost, and implements the high-concentration formula.

The gaming machine comprises: a lottery wheel having plural lottery holes that lottery balls can enter; a game content determination device that, as the lottery balls enter any of the plural lottery holes, determines a game result based on the any of the plural lottery holes that the lottery balls have entered; a discharge path that is provided below the lottery wheel and that discharges the lottery balls entering, one each, the plural lottery holes; a lifting device that conveys the lottery balls to a position higher than the lottery wheel; and a collection path that guides the lottery balls discharged from the discharge path to a conveyance start position of the lifting device, wherein the collection path includes a ball delivery device for delivering the lottery balls being collected, toward the conveyance start position of the lifting device.

A medical service support system is provided which manages a use state of medical instrument used in medical operations with predetermined task sequence is provided. A reading unit reads use state specifying information recorded in the use state specifying information recording unit before the medical instruments are used for a certain task. A determination unit determines whether the use of the medical instrument for the task follows the task sequence from use state specifying information read. A writing unit writes, in the use state specifying information recording unit, the use state specifying information which specifies that the task is executed when the task is executed by a task execution unit.

The invention relates to dye preparing devices, in particular to a dye preparing device for leather dyeing. The dye preparing device comprises a one-way valve, a water discharge pipe, a preparing box, a support, a preparing device, a stirring device and the like, wherein the preparing device and the stirring device are arranged at the top of the support, the preparing device is located on the left of the stirring device, the preparing box is connected to the right end of the lower portion of the support, the water discharge pipe is connected to the middle of the bottom of the preparing box, and the one-way valve is arranged on the water discharge pipe. The dye preparing device has the advantages that a preparing solvent can be measured precisely, a prepared dye solution is even and fine and smooth, the dye solution is high in homogenizing degree and is evenly mixed, and high preparing efficiency and preparing accuracy are achieved.

A process for the preparation of an acrylic acid ester polymer, includes carrying out polymerization of an acrylic acid ester or block copolymerization of an acrylic acid ester and another (meth)acrylic monomer in the presence of an organolithium compound and an organoaluminum compound represented by the following formula (I):AlR1R2R3  (I)wherein R1 represents an alkyl group having at least 3 carbon atoms, an alkoxy group having at least 3 carbon atoms or an aryloxy group, R2 and R3 each independently represent an aryloxy group or may be coupled together to form an arylenedioxy group. The process makes it possible to heighten the reaction rate and living properties upon polymerization and heighten the block formation efficiency upon block copolymerization.

A method of preparing monoatomic layer black phosphorous by irradiating an ultrasound includes: putting black phosphorus into a solvent and irradiating the ultrasound; recovering a solution from a solution to which the ultrasound is irradiated; and collecting black phosphorus remaining after the solution has been recovered, putting the black phosphorus into a solvent, irradiating the ultrasound, and recovering a solution.

The invention discloses a hypodermic syringe. The hypodermic syringe comprises a main cylinder body, a medicine mixing cylinder and a needle body. Two medicine storage tanks are arranged in the main cylinder body, and detachable liquid medicine bottles are installed in the medicine storage tanks. The liquid medicine bottles comprise liquid medicine cylinders and piston blocks, the interiors of theliquid medicine cylinders are pre-filled with liquid medicine, the piston blocks are installed at the upper ends of the liquid medicine cylinders, and the piston blocks can move within the liquid medicine cylinders. The bottoms of the medicine liquid cylinders are made of rubber materials. A push rod is arranged above the medicine storage tanks in the main cylinder body, the push rod can push thepiston blocks to move, and a window cover opposite to the medicine storage tanks is hinged to the main cylinder body. The medicine mixing cylinder is detachably installed at the bottom of the main cylinder body, two puncturing needles are installed at the upper end of the medicine mixing cylinder, and a liquid medicine mixing chamber is arranged inside the medicine mixing cylinder to communicatewith the puncturing needles. An injection channel is arranged at the bottom of the liquid medicine mixing chamber. The detachable needle body is arranged below the medicine mixing cylinder and is communicated with the injection channel. The push rod pushes the two liquid medicine bottles to simultaneously inject the liquid medicine into the liquid medicine mixing chamber for mixing, so that the mixed liquid medicine can be quickly and uniformly prepared, and the liquid medicine pollution is reduced.

The invention relates to haemodialysis solution and the closed soft package bag. The haemodialysis is characterized in that the haemodialysis solution comprises independent closed softly packaged concentrated solution A and B; the concentrated solution A and B are diluted into isotonic hermodialysis solution by a dialysis machine and dialysis water according to proportion. The closed soft package bag is characterized in that the closed soft package bag comprises a soft bag body and a stream guidance tube which is integrally connected with the soft bag; the upper end of the stream guidance tube is provided with a connecting head communicated with the dialysis machine; the soft bag body and the stream guidance tube can be pressed and molded by nontoxic polyvinyl chloride, or nontoxic polyethylene, or nontoxic polypropylene, or nontoxic complex film, or nontoxic aluminum foil. The invention can prevent problems existing between supply and demand and can satisfy the patients with various dialysis demands; the closed soft package bag adopts various complex film and aluminum foil to be made into dialysis solution adopting package bag with high temperature resisting function, tensile resistance and pressing resistance, thereby having the effect of wide application range.

The invention relates to a device for preparing a colchicine solution for biotechnology, in particular to a device for rapidly preparing a colchicine solution for biotechnology. The device for rapidly preparing colchicine solution for biotechnology is even in preparing, thorough in mixing and high in preparing speed, and comprises a bottom plate, a left frame, a right frame, a collecting frame, a guide sleeve, a supporting rod, a feeding hopper, a first electronic control valve, a second electronic control valve, top plates, a first spring, a feeding opening and the like; the left frame, the collecting frame, the guide sleeve, the supporting rod and the right frame are sequentially arranged at the top of the bottom plate from left to right, and the top plates are arranged at the tops of the left frame and the right frame. The device has the advantages of being even in preparing, thorough in mixing and high in preparing speed; in addition, due to the effect of a filter net, substances in other parts in a water tank can be prevented from flowing into a stirring tank.

The invention belongs to the technical field of haze prevention and particularly relates to fire coal desulfuration preparation equipment for haze prevention. The invention aims at providing the fire coal desulfuration preparation equipment for the haze prevention, which is uniform and thorough in preparation and high in preparation speed. In order to solve the technical problem, the invention provides the fire coal desulfuration preparation equipment for the haze prevention. The equipment comprises a bottom plate, a left frame, a right frame, a top plate, a first slide rail, a first slide block, a mounting seat, a first motor, a disc cam, a connecting rod, a movable frame and a second slide rail, wherein the left frame is welded at the left end of the bottom plate; the upper part of the right side of the left frame is in bolted connection with the mounting seat; and the mounting seat is fixedly connected with the first motor in a bolted manner. The equipment achieves effects of uniform preparation, thorough preparation and high preparation speed, is reasonable in structure, low in manufacturing cost and easy to maintain and has an effect of a reinforcing rib.

The invention relates to a grinding fluid preparing device, in particular to a grinding fluid preparing device for production of LED lamps. The invention aims to provide the grinding fluid preparing device for production of the LED lamps, which is high in preparation speed, uniform in preparation and thorough in preparation. In order to solve the technical problem, the invention provides the grinding fluid preparing device for production of the LED lamps. The grinding fluid preparing device for production of the LED lamps comprises a bottom plate, a left rack, first reinforcing ribs, second reinforcing ribs, a first electronic control valve, a rack, a gear, a feeding hopper, a rotating shaft, a first bearing block, blades, a sealing ring and the like, wherein the left rack is welded at the left end of the top of the bottom plate; the rack is welded on the upper part of the right side of the left rack; and the second reinforcing ribs are welded between the left side of the top of the rack and the upper part of the right side of the left rack. The grinding fluid preparing device for production of the LED lamps has effects of high preparation speed, evenness in preparation and thorough preparation. The device is reasonable in structure, low in manufacturing cost and easy to repair. Because the bottom plate is made of high-quality steel and a zinc coating covers the surface of the bottom plate, the device is not easy to corrode, and the service life is prolonged.

The invention discloses a fertilizer special for watermelon and a fertilizer application method, and belongs to the technical field of watermelon planting. The method adopts the following fertilizers in parts by weight: base fertilizers including 2800 parts of decomposed dung, 50 parts of plant ash, 5.5 parts of boron-zinc-magnesium fertilizer, 17 parts of monoammonium phosphate and 12 parts of urea ammonium nitrate as well as additional fertilizers including 16 parts of nitrogen fertilizer, 9 parts of phosphate fertilizer, 20 parts of potash fertilizer and 15 parts of alga extract. The fertilizer application method comprises the following steps: A, applying the base fertilizers: applying the decomposed dung to bottom soil of watermelon ditches, mixing the plant ash, boron-zinc-magnesium fertilizer, monoammonium phosphate and urea ammonium nitrate uniformly and applying the mixture to surface soil of the watermelon ditches; B, applying the additional fertilizers: applying the additional fertilizers at a vine developing stage, a vine accelerating stage and a watermelon swelling stage of watermelon growth. The invention provides the fertilizer special for watermelon, which is balanced in proportioning, is easily absorbed by watermelon and is high in yield and good in quality, and the fertilizer application method.

The invention provides a uniform solution feeding system for multi-nozzle electrospinning mass production equipment. The system comprises a spinning solution preparing device, a spinning solution distributing device and a spinning unit, wherein the spinning solution distributing device comprises a spinning solution distributing tank, a row of solution distributing ports are formed in the distributing tank at equal intervals, a return pipe is arranged and connected to the head end and tail end of the distributing tank, a solution distributing valve is arranged at the position, near the tail end of the distributing tank, of the return pipe, and a pressure sensor capable of controlling opening and closing of the solution distributing valve is arranged in the distributing tank; the spinning unit comprises a spinning pipe connected with the distributing tank, a row of spinning nozzles are arranged on the spinning pipe at equal intervals, and a depressurization port is formed in the end, away from the distributing tank, of the spinning pipe. By means of the spinning solution preparing device, the spinning solution distributing device and the spinning unit which are arranged in an integrated mode, preparation and uniform distribution of spinning solutions can be achieved, solutions can be fed to tens of thousands of spinning nozzles uniformly at the same time, so that the spinning solutions sprayed out of the tens of thousands of spinning nozzles have the same pressure and same flow rate, and mass production of electrospinning is achieved.

The invention provides a preparation method of high-matching coal-oil slurry. The preparation method comprises the following steps: carrying out coal washing, crushing and drying, and grinding the dried coal into coal powder; mixing the coal powder with heavy oil according to a certain ratio; and adding a catalyst, and carrying out stirring to prepare the coal-oil slurry. The coal meets the following requirements that the volatile content is larger than or equal to 37%, the hydrogen-carbon atom ratio is larger than or equal to 0.75, the inertinite content is less than or equal to 20%, and vitrinite reflectance is less than or equal to 0.65. The heavy oil meets the following requirements that the ash content is less than or equal to 1.0%, dynamic viscosity of the heavy oil at 100 DEG C is less than or equal to 1500 MPa, the hydrogen-carbon atomic ratio is 0.7-1.70, and the aromatic degree is greater than 0.20. The coal-oil slurry prepared by the method has high matching performance, andthe coal and heavy oil in the coal-oil slurry can be prevented from layering, so that the problem that coking is caused due to local overheating caused by the fact that the coal-oil slurry is deposited in a preheater or a reactor can be solved. Meanwhile, the synergistic effect between the coal and heavy oil can be fully exerted, the conversion rate and the oil yield of the coal and heavy oil areimproved, and therefore the method is more practical.

The invention discloses a safe preparation device for an oil field water-based fracturing fluid, and belongs to the field of oilfield chemistry. The device comprises a preparation tank, a feeding pipeis arranged at the top end of the preparation tank; a crushing box is arranged in the preparation tank; the inner wall of the preparation tank is hinged with one end of a shaking plate; a cam is arranged below the other end of the shaking plate; a water pumping pipe is arranged on a water tank, a spraying disc is arranged at the outlet end of the water pumping pipe; the output shaft of a stirringmotor is connected with a rotating shaft; a plurality of groups of stirring blades are mounted on the rotating shaft and arranged inside the preparation tank, four groups of measuring and sampling pipe orifices are formed in the preparation tank, an inclined guide plate is arranged at the bottom end of the preparation tank, a discharge pipe is arranged at the lowest end of the inclined guide plate, a heater is arranged inside the inclined guide plate, one end of a circulating pipe is connected with the discharge pipe, and the other end of the circulating pipe is connected with the lateral wall of the preparation tank. Large particles are prevented from influencing the subsequent preparation of the water-based fracturing fluid, the uniformity and effect of the water-based fracturing fluidare ensured, the preparation uniformity of the water-based fracturing fluid is ensured, and the subsequent use is facilitated.

The invention relates to leaf fertilizer for improving the capability of selenium enrichment of fava beans, and belongs to the technical field of agricultural leaf fertilizer. The leaf fertilizer adopts the formula that water of 15 kg, glutamic acid of 0.01-10 g, leucine of 0.01-10 g, histidine of 0.01-10 g, methionine of 1-50 g, cystine of 0.01-40 g, threonine of 0.01-15 g, phenylalanine of 0.01-0.15 g, serine of 0.01-40 g, tryptophan of 1-40 g, VC of 0.01-40 mg, VE of 0.01-40 mg, VB1 of 0.01-50 mg, VB6 of 0.01-40 mg, VB12 of 0.01-40 mg, potassium oxide of 1-60 g and coenzyme II of 0.01-2 g are uniformly stirred. The invention has the advantages that exogenous selenium is not needed, the formula is simple, the preparation is easy, the leaf fertilizer facilitates enhancing the capability of selenium enrichment of fava beans, and enables the selenium content of fava beans to reach the selenium enrichment standard of 0.01 mg / kg, and the use cost is 30-70 yuan / mu; besides, the antiviral performance and stress resistance of fava beans can be improved, the agricultural production cost and environmental pollution can be reduced, and excellent economic and ecological benefits are obtained.

The invention relates to a method for directing communication traffic to and from a communication unit within an application control system, wherein the application control system comprises a plurality of application control components and the application control components are capable of transmitting messages to the communication unit using light waves. By determining position information of the application control components within the application control system and of a first communication unit within the application control system, an area of interest for the first communication unit is computed based on at least the first position information. A first subgroup of one or more application control components from the plurality of application control components located within the area of interest of the first communication unit is identified and data paths through the application control system are programmed to communicate with the communication unit using the identified subgroup of application control components.

The invention relates to a medical preparation device, in particular to a single-hand-operated medicine preparation device for medical care. The invention aims at solving the technical problem of providing a single-hand-operated medicine preparation device for medical care which can uniformly prepare the medicine. According to the technical scheme, the single-hand-operated medicine preparation device for the medical care comprises a bottom plate, a medicine box, a supporting plate, a first connecting block, a filtering net, a connecting plate, a discharging pipe and a storage hopper; and the medicine box is arranged on the upper left side of the bottom plate, the upper left side of the bottom plate is connected with the supporting plate, the top of the right side of the supporting plate isconnected with the first connecting block, and the right end of the first connecting block is connected with the filtering net. The single-hand-operated medicine preparation device has the beneficialeffects of simplicity in operation and uniformity in preparation of the medicine. By arranging a cutting knife, a medicine bag can be easily crushed, so that the medicine can be leaked into a lower container; and by arranging a first guide rail and a first guide sleeve, the medicine can be uniformly shaken in the preparation process of the medicine, and the operation for uniformly preparing the medicine can be realized.

The invention discloses a fertilizer special for cantaloupe and a fertilizing method, and belongs to the technical field of melon and fruit plantation. According to the method, the following fertilizers in parts by weight are employed: 1) compost: 2800 parts of decomposed dung, 50 parts of plant ash, 5.5 parts of boron-zinc-magnesium fertilizer, 17 parts of monoammonium phosphate, and 12 parts of urea-ammonium nitrate; and top dressing: 26 parts of urea, 20 parts of potassium sulfate, 10 parts of calcium phosphate monobasic, 3 parts of zinc sulfate, 3 parts of magnesium sulfate and 3 parts of ferric sulfate. The fertilizing steps comprise: A, applying base fertilizers, namely applying decomposed dung into bottom-layer soil of melon trench, and uniformly mixing plant ash, boron-zinc-magnesium fertilizer, monoammonium phosphate and urea-ammonium nitrate and applying to surface-layer soil of the melon trench; and B, performing topdressing, namely performing topdressing at a tendril elongation stage, a tendril promoting stage and a melon expanding stage. The provided fertilizer special for cantaloupe is balance in preparation and is easily absorbed by cantaloupe, and cantaloupe cultivated by applying the fertilizer by using the fertilizing method is high in output and good in quality.

A pressure stabilizing type concrete additive automatic proportioning device comprises a box body, a plurality of storage bins are arranged above the box body, electric control switches are arranged below the storage bins, a support is further fixedly connected in the box body, and a plurality of hoppers corresponding to the storage bins and located below the storage bins are vertically and slidably connected to the support through springs. A sliding switch capable of being reset in a sliding mode is arranged below the hopper, a supporting plate capable of vertically sliding is further arranged on the support in the box body, an electromagnet is fixedly connected to the supporting plate, an electric contact is further arranged below the hopper, a contact switch corresponding to the electric contact is arranged on the supporting plate, a ventilation pipe is fixedly connected to the lower portion of the supporting plate, and a fan is fixedly installed in the box body. According to the pressure stabilizing type concrete additive automatic proportioning device, the draught fan is started to drive solutes in the hopper to move along with airflow, rotating airflow is formed in the mixing bin, premixing of all the solutes is achieved, the solutes are mixed evenly, and the mixing efficiency is improved. Therefore, the additive solution can be prepared more uniformly.

The invention belongs to the field of food processing and particularly discloses a sterilization device for food processing shops, which comprises a preparing barrel for preparing a disinfecting liquid and a plurality of spray pipes mounted on the roof of a shop; the lower end of each spray pipe is communicated with a plurality of nozzles; a stirring shaft is rotationally connected inside the preparing barrel; a plurality of stirring blades are hinged peripherally to the stirring shaft; a sliding plate is vertically slidably connected inside the preparing barrel; the outer diameter of the sliding plate is less than the inner diameter of the preparing barrel; a through hole allowing passage of the stirring shaft is arranged in the middle of the sliding plate; the inner diameter of the through hole is greater than the outer diameter of the stirring shaft; a sponge sleeve is connected to the outer side of the sliding plate in releasable manner. The sterilization device for food processingshops allows water left in the preparing barrel to be wiped, so that influence of the left water upon preparation precision is avoided.

The invention relates to a preparation technology and equipment for sulfuric acid for the coking industry. The preparation equipment comprises an acid preparation tower, a circulating pump, a circulating cooler, a demister, a dilute acid nozzle, a flow record adjusting instrument, a flow record proportion adjusting instrument, a liquid level record adjusting instrument and a temperature monitoringinstrument. The preparation technology and equipment have the beneficial effects that the problem of the key of a preparation process for sulfuric acid, namely, corrosion and heat release of equipment can be solved, the continuous and automatic operation of acid preparation can be realized, the emission of acid mist is reduced, the personal safety hazards are eliminated, the environment is protected, the heat exchange speed is high, the storage tank space is saved, the cost is low, the maintenance is convenient, and the like.

The invention discloses an automatic spraying device for landscaping, which comprises a base, wherein the side wall of the upper end of the base is rotatably connected with a first rotating shaft, which is vertically arranged, through a first rotating element; the upper end of the first rotating shaft is fixedly connected with a mounting seat; the base is of a hollow structure; a rotating mechanism is arranged in the base, and the rotating mechanism is fixedly connected with the mounting seat; the side wall of the upper end of the mounting seat is provided with a stirring mechanism; the side wall of the mounting seat is provided with a pressure pump; and the pressure pump is communicated with the stirring mechanism through a first water pipe, the side wall of the upper end of the mountingseat is also provided with a first shell, the first shell is arranged close to the pressure pump, the first shell is of a hollow structure, a reciprocating mechanism is arranged in the first shell, and a mounting block is arranged on the reciprocating mechanism. The spraying head of the spraying device can spray while rotating, so that the spraying area is improved, and the spraying head can be disassembled conveniently, so that the spraying head is convenient to maintain and replace.

A repair paint of a moulding wind-shielding ring for a foundry furnace comprises the following components in parts by weight: 10-20 parts of refractory mortar, 70-80 parts of 80-90 meshes of quartz sand, 5-15 parts of coal tar and the balance water. The paint also contains graphite powder mixture which accounts for 5-15% of the total weight of the paint, wherein the graphite powder mixture comprises the following components in parts by weight: 50-70 parts of flaky graphite powder, 20-40 parts of bentonite and 5-15 parts of carboxymethyl cellulose. The repair paint has better repair effect, wide application range, lower production cost and higher toughness and is suitable for the repair of the net structure.

A method of preparing monoatomic layer black phosphorous by irradiating an ultrasound includes: putting black phosphorus into a solvent and irradiating the ultrasound; recovering a solution from a solution to which the ultrasound is irradiated; and collecting black phosphorus remaining after the solution has been recovered, putting the black phosphorus into a solvent, irradiating the ultrasound, and recovering a solution.

The invention discloses a special fertilizer for Hami melon and a fertilization method, belonging to the technical field of melon and fruit planting. The method adopts the following fertilizer in parts by weight; composting: 2800 parts of decomposed manure, 50 parts of plant ash, 5.5 parts of boron, zinc and magnesium fertilizer, 17 parts of monoammonium phosphate, 12 parts of urea ammonium nitrate; topdressing: 26 parts of urea, 20 parts of potassium sulfate, 10 parts of superphosphate, 3 parts of zinc sulfate, 3 parts of magnesium sulfate and 3 parts of iron sulfate; the fertilization steps are: A, Base fertilizer application: Apply decomposed manure to the bottom soil of the melon ditch, mix plant ash, boron, zinc and magnesium fertilizers, monoammonium phosphate, and urea ammonium nitrate into the surface soil of the melon ditch; Topdressing in the vine stage and topdressing in the melon stage. The invention provides a special fertilizer for Hami melon with balanced preparation, easy absorption of Hami melon, high yield and good quality and a fertilization method.

The invention relates to plaster slurry preparing equipment, in particular to plaster slurry preparing equipment for skin packing plaster mold making. According to the plaster slurry preparing equipment for skin packing plaster mold making, uniform stirring and bubble removing are achieved. The plaster slurry preparing equipment comprises a base plate, a right frame, a top plate, a first supporting rod, a second supporting rod, a stirring frame, a discharging pipe, a valve, a fixed rod, a first collecting frame, an electric pushing rod, a bearing seat and the like. The right frame is welded at the right end of the top of the base plate. The first supporting rod and the second supporting rod are welded in the middle of the top of the base plate, wherein the second supporting rod is located on the right side of the first supporting rod. By controlling rotating of a rotation motor, a stirrer is driven to rotate continuously to stir plaster powder and water, and meanwhile, the stirrer moves from side to side continuously, so that plaster slurry is prepared rapidly and uniformly.

The invention discloses a coating for repairing a molded windshield ring for a casting furnace, which comprises the following components in part by weight: 20 to 30 parts of fire clay, 70 to 80 parts of No.4 quartz sand and the balance of water. The coating also comprises coal tar which accounts for 2 to 5 percent of the mass of the coating. The fire clay comprises the following components in part by weight: 50 to 70 parts of refractory clay, 20 to 40 parts of high alumina powder and 5 to 15 parts of magnesia powder, wherein chromium ore powder is mixed in the No.4 quartz sand and accounts for 5 percent of the total mass of the No.4 quartz sand. The coating has the advantages of better repairing effect, wider application range, lower production cost, stronger toughness and convenience forrepairing a net structure.

The invention proposes a preparation method of highly compatible oil-coal slurry, which includes the following steps: coal washing, crushing and drying, and grinding the dried coal into coal powder; mixing coal powder and heavy oil in a certain proportion; adding a catalyst , stirred to make oil-coal slurry; the coal meets the following requirements: volatile matter ≥ 37%; hydrogen-carbon atomic ratio ≥ 0.75; inertinite content ≤ 20%; vitrinite reflectance ≤ 0.65; The following requirements: ash content ≤ 1.0%; dynamic viscosity ≤ 1500mPa.s at 100°C; hydrogen-carbon atomic ratio of 0.7-1.70; aromaticity greater than 0.20. The oil-coal slurry prepared by this method has a high matching property, which can avoid the problem that the coal and heavy oil in the oil-coal slurry are separated and cause the oil-coal slurry to deposit in the preheater or reactor and cause coking due to local overheating. It can give full play to the synergy between coal and heavy oil, improve the conversion rate and oil yield of coal and heavy oil, and thus be more practical.

The invention relates to a silver glue preparation equipment for LED packaging, in particular to a closed silver glue preparation equipment for LED packaging. The technical problem to be solved by the present invention is to provide a closed-type silver glue preparation equipment for LED packaging with high safety and capable of multi-stage stirring preparation. In order to solve the above-mentioned technical problems, the present invention provides such a closed silver glue preparation equipment for LED packaging, which includes a preparation box, a cover tightening mechanism, a switch mechanism, a first bearing seat, a pole, a motor, etc.; the top of the preparation box is equipped with There is a cover tightening mechanism, and the bottom of the preparation box is equipped with a switch mechanism. The inside of the preparation box is symmetrically connected with the first bearing seat, and the first bearing seat is connected with the first rotating rod. The first rotating rod passes through the first bearing seat on the right side. . The present invention is first provided with a cover tightening mechanism, by combining the first cover plate and the second cover plate, after the second block and the first block are locked together, the preparation box can be closed.