30results about How to "Guaranteed production process" patented technology

A low-carbon magnesia carbon brick containing a nanometer zinc oxide is characterized in that the low-carbon magnesia carbon brick comprises the four following raw materials by weight percentage: 80-94wt% of electric melting magnesia particles, 1-5wt% of crystalline flake graphite, 1-3wt% of metal Al and 1-5wt% of nanometer zinc oxide, and 2-4wt% of a phenol formaldehyde resin with the quantity ofthe weight percentage sum of the four raw materials. The low-carbon magnesia carbon brick utilizes the characteristics of the nanometer zinc oxide powders such as fine granularity, high activity at high temperature, moderate price, and the like to improve the microstructure of the low-carbon magnesia carbon brick, prompts the used metal Al antioxidant to sufficiently play the role and prepares the low-carbon magnesia carbon brick with excellent comprehensive performance and moderate price. The prepared low-carbon magnesia carbon brick can be used for the steel-making furnace, the refining furnace and the lining of the steel ladle in the steel metallurgical industry, reduces the carbon added in the molten steel, reduces the temperature reduction of the molten steel and is beneficial for improving the quality of the steel and saving the energy resource.

The invention relates to a corundum spinel castable with a micro-nano pore structure and a preparation method of the corundum spinel castable. The technical scheme of the invention is as follows: the preparation method comprises the following steps of: dry-blending 45-82 percent by weight of tabular corundum particles and 1-15 percent by weight of magnesium aluminate spinel particles to obtain mixed aggregate, and dry-blending 1-10 percent by weight of magnesium aluminate spinel fine powder, 4-12 percent by weight of corundum fine powder, 5-15 percent by weight of Alpha-Al2O3 micropowder, 2-8 percent by weight of pure calcium aluminate cement and 0.1-0.5 percent by weight of SiO2 micropowder to obtain mixed powder; then adding a water reducing agent, water and foams which respectively account for 0.2-1.0 percent by weight, 3.5-4.5 percent by weight and 5-15 percent by weight of the aggregate and the powder to the mixed powder, and stirring to prepare mixed slurry; and pouring the mixed aggregate into the mixed slurry, stirring, moulding by casting, curing, demoulding, baking, heating to 1450-1760 DEG C and maintaining the temperature for 2-4 hours. The preparation method disclosed by the invention has the characteristics of simple process and easiness for construction and industrial production; and the prepared corundum spinel castable is high in comprehensive property, good in thermal shock resistance and long in service life.

The invention provides an ion chromatograph and a sample introduction method. The ion chromatograph includes a main body and a sample introduction needle connected to the main body. The sample introduction needle comprises a needle tube, an ultrasonic sheet arranged on the surface of the tube wall of the needle tube and a metal film arranged on the surface of the ultrasonic sheet. In a hydrogen peroxide sample introduction process, through metal film catalytic hydrogen peroxide decomposition, water and oxygen are produced. The ultrasonic sheet continuously provides ultrasonic vibration to thehydrogen peroxide to produce a solution degassing function, to remove oxygen produced by the decomposition of hydrogen peroxide and to reduce the oxygen concentration of the hydrogen peroxide to the absolute safety level and the stable test performance range of the ion chromatograph detection and thus the in the hydrogen peroxide sample introduction process, the system pipe in the ion chromatograph is not oxidized, the ion chromatograph blocking caused by oxygen in the chromatograph is prevented, the stability and sensitivity of detection are improved, and the quality of the raw materials andthe consistency of processes such as production and monitoring are guaranteed.

The invention relates to a high pure corundum castable material containing nanometer calcium carbonate and a preparation method thereof. Based on the present commonly used corundum castable material, by adding nanometer calcium carbonate powder as well as adopting efficient dispersant and suitable mixing technology, the invention prepares corundum castable material that contains nanometer calcium carbonate. The invention solves the disadvantage of low strength of the present high pure corundum castable material in low and middle temperature, more particularly, the strength in about 800 DEG C. Furthermore, the variation of the burnt cool strength of the corundum castable material containing nanometer calcium carbonate from 800 DEG C to 1600 DEG C is comparatively small, and the cool strength and hot strength are both higher than those of the corundum castable material containing cement with the same content of CaO. The corundum castable material that contains nanometer calcium carbonate and is prepared by the utility model can be widely applied to such industries fields as iron and steel, nonferrous metals, ceramics and petrochemical etc. The invention can also be applied to fireproof materials products cast, molded and burnt by a porous brick etc., which can greatly reduce the burnt temperature and save energy.

The invention belongs to the technical field of blow molding and particularly relates to a full-automatic blow molding line; an automatic feed system, a blow molding machine, a secondary cooling mechanism, an offcut removal mechanism and a conveying mechanism are connected in sequence, an online leak tester and an online labeler are arranged sequentially along the conveying mechanism, the discharge end of the conveying mechanism is provided with a stacking packaging mechanism, a flame pretreatment device is disposed between the online leak tester and the online labeler, and all the automatic feed system, the blow molding machine, the secondary cooling mechanism, the offcut removal mechanism, the conveying mechanism, the online leak tester, the online labeler and a stacking packaging machine are connected with a PLC (programmable logic controller) and a driving device. The full-automatic blow molding line has the advantages that the line meets different production needs, equipment cost is greatly reduced, the advantages such as high responsiveness, energy saving and environmental friendliness are imparted, the problems of high energy consumption of blow molding machinery and difficulty in speed increase are solved, production quality and production process can be effectively guaranteed, optimal production is achieved, implementing is easy, raw materials are saved, the cost is reduced, forming cycle is shortened, machinery efficiency is improved, and automation level is increased.

The invention discloses a production process of scorch-scented brown sugar, comprising the steps of (1) adding water to dissolve brown sugar, adding invert syrup, wherein the weight ratio of brown sugar, water and invert syrup is (20-30):(5-8):(2-3); heating for thorough dissolving for 2 hours and longer; (2) pumping blended syrup to a continuous sugar boiler for boiling, and setting temperature to 130-140 DEG C; according to the scorch-scented brown sugar produced by using the production process, the brown sugar contains suitable molasses, protein colloid, cellulose, inorganic and other substances, the substances are subjected to slow carbonyl-amine reaction with reducing sugar in the invert syrup to form strong natural soft scorch scent, the overly sweet taste is weakened, and the product has deeper color, brownish black, is free of essences and pigments and is green and healthy; the finished product has natural scorch scent, moderate sweetness, and mellow and thick taste, and the defect that brown sugar has single taste and overly sweetness is overcome; the seasonal supply problem of sugarcane is solved; the production process ensures whole year production, and equipment utilization rate is increased significantly.

The invention discloses a motor fault diagnosis system and method based on current and phase identification. The system includes an isolated voltage transformer VT, a voltage signal conditioning circuit, an isolated current transformer CT, a sampling resistor R, a current signal conditioning circuit and a main control chip; the method detects whether the AC motor starts to be blocked by judging the phase relationship between the voltage and current in the starting phase change. When a stall occurs during the running phase, the motor slip rate changes approximately from a stable value to 1 step by step. At this time, the motor current increases sharply and the phase between voltage and current jumps rapidly to a new phase value. Therefore, the present invention can quickly and accurately diagnose whether the motor is stalled or not by detecting the relationship between the motor current and the phase and time of the voltage and current, and improve the safety of the operation of the AC motor.

The invention relates to a corundum-spinelle lithical concreting material containing nano magnesium carbonate and a preparation method. In the method, the corundum-spinelle lithical concreting material containing nano magnesium carbonate is prepared by taking the currently and commonly used corundum-spinelle lithical concreting material as the base, adding nano magnesium carbonate powder, and adopting high efficient dispersant and proper mixing technique. With the method adopted, not only the adverse impact of magnesium oxide hydration on the concreting material workability caused by adding magnesia to generate spinelle in situ is avoided, but also the dreg resistance and thermal shock resistance of the existing corundum-spinelle lithical concreting material are improved. The corundum-spinelle lithical concreting material containing nano magnesium carbonate prepared by the invention can be widely used in high temperature industries such as steel, nonferrous metal, ceramic, petrochemical and the like, and can also be used for refractory material products such as air bricks which are baked after concreting moulding.

The invention relates to calcium aluminate cement containing nanometer-sized calcium carbonate and a preparation method thereof. The preparation method of the calcium aluminate cement containing nanometer-sized calcium carbonate is based on calcium aluminate used in prior refractory material by adding nano calcium carbonate powder and alumina micropowder. The invention solves the shortcoming of low mid-temperature strength in prior calcium aluminate, and particularly greatly improves the strength around 800 DEG C. The monolithic refractory containing the combined nanometer-sized calcium carbonate has a small change in cold strength under 800 DEG C and 1600 DEG C burning, and the strength of the cold state and the hot state is greatly increased compared with that of prior ordinary monolithic refractory containing the same quantity of CaO made by combining calcium aluminate cement. The invented nanometer-sized calcium aluminate cement containing calcium carbonate can be broadly used in producing refractory material such as refractory casting material, spray material, etc., and can greatly improve mid-temperature strength of material.

The invention relates to a nano-sized composite silica brick and a production method thereof. The invention is characterized in that: raw materials and binder of the silica brick are as follows: silica granules and fine powders, waste silica brick granules, calcium carbonate nanoparticles, iron oxide nanoparticles, silicon dioxide nanoparticles, fluorite powders, lime and sulfite pulp wastes. Theproduction method is based on the existing production process of the silica brick, and introduces compound nanopowders in optimal proportions in the production process of the silica brick after high-efficiency dispersion, to produce nano-sized composite silica bricks. With the addition of nanopowders, the performance of silica brick is significantly improved, and manifested as follows: 1) the particle size fraction is more reasonable, the accumulation is compact and the texture is uniform; 2) the slurry has good plasticity and moldability and the production efficiency is improved; 3) the burning temperature is decreased to 20 DEG C, thus realizing energy conservation and discharge reduction; 4) the tridymite is superior in crystallization conversion and has low content of quartz residues;5) the number of closed pores is increased, the number of opened pores are reduced, the porosity is reduced, and the strength and refractoriness under load are increased; and 6) the final product hasgood appearance, smooth end surface and good bonding property, and the rate of qualified products is increased.

The invention discloses a full-automatic tin dip-soldering machine which comprises a machine body, a transmission mechanism installed on the machine body and a control circuit used for controlling the transmission mechanism. The transmission mechanism comprises an upper linear module and a lower linear module which are used for controlling horizontal direction movement and arranged in parallel, a left linear module and a right linear module which are used for controlling perpendicular direction movement and arranged in parallel and stepping motors. The upper linear module and the lower linear module are respectively provided with a sliding table used for fixedly connected the left linear module and the right linear module, the left linear module and the right linear module are respectively provided with a sliding table connected with a circuit board clamp. The control circuit is connected with each stepping motor and drives and controls the corresponding linear module to work. The method that the human hands are simulated by the machine is adopted so that the whole tin dip process can be completed, the advantages of manual dip soldering are kept, the defects of hand operation are overcome, the manufacturing technique is guaranteed, and the workload of workers is reduced.

A tension drainage overlap joint ladder relates to the power transmission line maintenance tool technology field. The ladder comprises a pole and tower fixing lock regulator (6), an elevating side ladder (7), an X-type safety stay wire (8) and a manned transverse ladder (12). The ladder has advantages that the structure is simple; installation and maintenance are convenient; work efficiency is high; work intensity is small; a drainage wire is in a natural pendulous circular arc shape after being installed, is not distorted and has no hard bending portions and other defects; a pressing plate of a drainage end is connected to a bolt in a tightening-moderate mode; and a technology is good and maintenance cost is reduced.

The invention provides a system and a method for utilizing waste heat of a low-concentration combustible material in tail gas of a Slapple furnace. A Slapple activating furnace (1) is connected with a regenerative chamber (2); a flue is arranged at the tail part of the regenerative chamber (2), and a flue damper (3) is mounted in the flue; a settling chamber (5) is connected with the flue, and air distribution chambers (7) and a heat accumulator (6) for afterburning are mounted in the settling chamber (5), air distribution ports are distributed in the air distribution chamber in an array manner, and a long flue combustion chamber (8) is mounted at the rear parts of the air distribution chambers (7); the tail part of the long flue combustion chamber (8) is connected with a flue gas emission passageway, a heat exchanger (10) and a coal economizer (12) are arranged in the flue gas emission passageway sequentially; and the tail end of the flue gas emission passageway is connected with a desulfurization and dust removing device (15). According to the system and the method, low-grade waste heat is fully utilized, simultaneously, pollutant discharge is reduced, the system reliability is high, and the operation and the maintenance are simple and convenient.

The invention relates to a closed-loop electric distance adjustment control and active safety protection device and method for an open mill, including three drivers equipped with motion control cards, wherein the first driver and the second driver are respectively connected with the first distance adjustment motor and the second The pitch-adjusting motor is connected, and the first pitch-adjusting motor and the second pitch-adjusting motor are respectively connected with the worm gear transmission mechanism of the pitch-adjusting roller; The distance roller and the fixed roller are connected with the gear transmission mechanism running. The present invention takes three motion control cards as the core to complete data reading, calculation, processing and control output, the data exchange between the motion control cards is realized through the industrial field bus, and the HMI man-machine interface device is realized through the Ethernet communication mode with the motion control card Data exchange, realize data exchange with the PLC controller of the mill through industrial field bus communication. The invention can greatly reduce the occurrence of overload faults, improve production efficiency and ensure the production process.

The invention discloses an automatic power regulation device for a polysilicon reducing furnace, comprising a silicon chip pre-heating device, a silicon chip constant-temperature heating device and controllers thereof, wherein, the silicon chip pre-heating device is provided with a power switch, a saturation resistor, a boosting transformer and a inverted pole switch which are connected in sequence, and the silicon chip pre-heating device is connected with a silicon chip by the inverted pole switch thereof; the silicon chip constant-temperature heating device is provided with a power switch, an isolation transformer, a silicon controlled rectifier and an isolating switch which are connected in sequence, and the silicon chip constant-temperature heating device is connected with the siliconchip by the isolating switch thereof; each controller is provided with a saturation resistor control module used for controlling the primary side voltage of the boosting transformer; a switch automatic switching control module is used for controlling the switching of the pre-heating device and the constant-temperature heating device, for controlling the breakdown sequence of the silicon chip, andfor controlling the tapping position of the inverted pole switch on the secondary side of the boosting transformer, thereby controlling preheating current of the silicon chip; a control module of thesilicon controlled rectifier is used for controlling the conduction angle of the controlled silicon, thereby controlling the constant-temperature heating current of the silicon chip; and the voltage regulator adopts wave splicing for voltage regulation.