816results about How to "Good effect of removing impurities" patented technology

The invention discloses an extraction and separation method of cannabidiol. According to the method disclosed by the invention, the water solubility of the cannabidiol is enhanced through adopting analkaline solution and the cannabidiol is extracted and enriched by utilizing an organic solvent; then the cannabidiol is purified and enriched through a polyamide resin column, neutral aluminum oxideand a bonded silica gel column; then the cannabidiol is crystallized to obtain high-purity cannabidiol. The method disclosed by the invention is easy to operate, strong in practicability and suitablefor industrial popularization and application.

The present invention relates to a dispersive air brick and a preparation method thereof. According to the technical scheme of the invention, 50 to 80 wt% of plate-shaped corundum is adopted as an aggregate. 12 to 32 wt% of aluminum oxide fine powders, 5 to 10 wt% of alumina micro powders and 3 to 8 wt% of a binding agent are adopted as matrix materials. According to the method, firstly, the matrix materials are uniformly mixed, and then the matrix materials and the aggregate are put into a mixer. 0.1 to 0.3 wt% of a water reducing agent and 4 to 6 wt% of water, counted relative to the sum of the aggregate and the matrix materials, are additionally added. The obtained mixture is stirred for 3 to 5 minutes, and then is cast and molded. After an obtained product is standing at the room temperature for 20 to 30 hours, the obtained product is dried for 22 to 26 hours at the temperature of 90 to 120 DEG C. then the obtained product is thermally insulated for 3 to 6 hours at the temperature of 1450 to 1650 DEG C. In this way, the dispersive air brick can be obtained. The plate-shaped corundum is in the form of equal-diameter particles, and the particle sizes of the equal-diameter particles are 2 to 5 mm. The method has the advantages of simple process, low labor intensity, high production efficiency, no pollution to the environment, and low cost. The prepared dispersive air brick is good in air permeability, strong in impurity-removing capability, excellent in thermal shock stability and good in penetration resistance performance.

The invention relates to a process for refining high-purity bismuth from bismuth-containing materials generated from anode mud recovery, belonging to the technical field of processes of recovering smelting bismuth by combining a wet process and a pyrogenic process of non-ferrous metal. The process comprises the following steps of: firstly increasing the content of bismuth contained in the bismuth-containing materials to obtain crude bismuth by adopting an enrichment process; and then further refining and purifying the crude bismuth into the high-purity bismuth by adopting a selective accurate temperature-control smelting method according to different melting points of compounds between bismuth metal and impurity-containing metal. Compared with the prior art, the invention reduces the requirements for the content of the bismuth contained in raw materials and can realize the economic and high-efficiency recovery of the bismuth metal, refine the high-purity bismuth and reduce the environmental pollution.

The invention discloses a method for producing an oxygen-free copper rod from secondary copper, which comprises the following steps of: (A) feeding the secondary copper into a furnace, and heating for melting; (B) refining to remove metal impurities; (C) reducing with natural gas to obtain pure copper; (D) adding rare earth and a complex deoxidizer and then outputting copper; and (E) casting, and performing continuous casting and rolling to obtain an oxygen-free copper rod. Compared with a traditional up-draw process, the method disclosed by the invention can adopt the easily available secondary copper as a raw material for production and can process a great quantity of secondary copper once, and overcomes the shortcomings of high production cost and low production efficiency of the up-draw process adopting secondary copper as raw material; natural gas reduction replaces poling, thereby being more environment-friendly and ensuring lower cost; and moreover, the labor capacity is small, and the defect of bad working condition in poling is overcome.

The invention relates to a method for preparing icariin, which comprises the following process steps: ethanol extraction, concentration, low-alcohol macroporous resin enrichment, polyamide separation and purification, and recrystalization. When the method is used for producing the icariin, the process is simple, the product yield is high, and the product purity is high. The process is also suitable for producing icariin of different content levels; and the product prepared by the process meets food and medical requirements.

The invention relates to the method to use special biology enzyme (pectic enzyme, fibrin enzyme, lipase, albumen enzyme, lacquer enzyme, xylan enzyme, polysaccharide enzyme, and catalase) and environment-friendly effective surfactant to produce aid fitting the biochemical pretreatment of fibrin fiber, and its fabric, and its processing technology. The aid for short flow of zoology pretreatment made of a host of biology enzyme and environment-friendly surfactant can fit the short flow of zoology pretreatment of fibrin fiber and its fabric. The invention advances the quality of the production. At the same tie, it reduces pollution to the environment, and it achieves the process of pretreatment of fibrin fiber and its fabric with the interreaction with biology enzyme and surfactant. Moreover, thep rocess does little harm to the fiber and it has an effective removement of residue. Additionally, it is friendly to the environment.

The invention relates to a solution preparation method of electrolytic manganese metal, and relates to improvement of a preparation process of an electrolytic stock solution in a process of producing manganese metal through a wet method. The method is characterized in that the preparation process comprises the following steps: (1) adding returned anode liquor to manganese ore raw material mineral powder, and adding sulfuric acid for leaching reaction; (2) carrying out primary pressure filtration on leaching reaction slurry, carrying out solid-liquid separation to obtain leaching filter liquor; (3) neutralizing the separated leaching filter liquor, and then oxidizing to remove iron; (4) regulating the PH value, and then sulfurizing to remove heavy metal; (5) carrying out secondary pressure filtration; (6) standing for separating; (7) carrying out third-time pressure filtration to complete a solution preparation process. The method disclosed by the invention can be used for effectively reducing the impurity content of liquid, reducing the consumption of a sulfurizing agent SDD (Sodium Dimethyl Dithiocarbamate) and reducing the production cost of electrolytic manganese, is obvious in impurity removing effect, and can be used for reducing the sulfur content of a product, enhancing the quality of the product and achieving the effect of removing the heavy metal through sulfurization.

The invention relates to a refining agent for smelting an aluminum alloy. The refining agent is characterized by comprising the following components by mass percent: 35% to 45% of NaCl, 25% to 35% of KNO3, 3% to 8% of CaF2, 6% to 10% of Na2SiF6, 7% to 12% of Na3AlF6, 5% to 10% of graphite and 0.5% to 1.5% of rare earth. The refining agent has the characteristics of good refining effect, strong degassing capacity and the like, and cannot generate noxious gas during a production process.

The invention belongs to the technical field of corrosion and prevention, and in particular relates to a casting method of an aluminum alloy sacrificial anode. The casting method comprises the following steps: adding basic electrolytic molten aluminum to a resistance furnace; then adding a zinc ingot to obtain molten aluminum alloy; performing jet refining on the molten aluminum alloy by adopting an argon located refining agent; charging argon to refined aluminum alloy melt to degas; drossing oxidizing scum on the surface of the aluminum alloy melt through a drossing tool; adding a low melting point metallic element to drossed aluminum alloy melt; electromagnetically agitating the melt after pressing the low melting point metal; carrying out ceramic filtering; pouring and casting the aluminum alloy melt to a preheated iron anode mould at an even casting speed under the temperature of 700 to 740 DEG C until the mould is full of the aluminum alloy melt; and moving the aluminum alloy melt out of the mould after cooling, solidifying and molding, so as to obtain the aluminum alloy sacrificial anode. The casting method has the characteristics of being short in smelting time, small in loss of iron scale, high in degassing and purifying performances, and low in smelting cost.

The invention provides a feeding device which comprises a support, a drying device and a screening device. The drying device is fixed on the support, and the drying device is movably connected with the screening device through a material control valve. The drying device comprises a tube body, a stirring shaft connected with a speed reducing motor and a heating cavity, the stirring shaft extends into the tube body and is fixedly provided with a stirring paddle, the heating cavity is arranged outside the tube body in a sleeved mode, and an upper cover of the tube body is provided with a feeder nose, a humidometer and a liquid outlet. The screening device comprises a screening cavity, an oblique screening mesh, a vibration motor, a material flowing opening and an impurity outlet. The screening mesh is fixed on the screening cavity through a spring and is connected with the vibration motor. The material flowing opening is formed in the bottom of the screening cavity, and the impurity outlet is in parallel contact with the lower face of the screening mesh. The feeding device has the advantages of being capable of supplying particle materials to a lower level device under a sealing environment, being good in drying and impurity removing effect, shortening the production cycle, and improving the production efficiency.

The invention provides a method for comprehensively recycling manganese, lead, silver and selenium from manganese anode slime. The method comprises the steps that firstly, the manganese anode slime, lead sulfide concentrate and ball milling liquid are mixed and subjected to wet-type ball milling; secondly, leaching of valuable metals such as manganese and selenium is conducted, leachate is reserved, and leached residues serve as lead smelting raw materials for recycling lead and silver; thirdly, a calcium-magnesium removing agent is added for impurity removing; and fourthly, a neutralizer, namely, ammonium hydroxide, and ammonium sulfate are added, a cleaning agent, namely, sodium dimethyl dithiocarbamate is dropwise added, and after stewing is conducted, activated carbon is added for adsorption, filter pressing is conducted, an electrolyzing additive is dropwise added into filtrate, and electrolytic manganese metal is prepared through electrolyzation. The method is small in investment, simple in technology, low in cost and capable of effectively increasing the comprehensive recovery rate.

The invention discloses a method for reducing contents of calcium ions, magnesium ions, potassium ions and sodium ions in manganese sulfate. F<-1> in FeF3 can be used for precipitating the calcium ions and the magnesium ions in a solution, Fe<3+> can generate sulfate together with the potassium ions and the sodium ions so as to be precipitated, and Fe(OH)3 formed by hydrolyzing the superfluous Fe<3+> has a remarkable flocculation effect, so that the FeF3 is used as a novel manganese sulfate impurity removal agent; and the calcium ions, the magnesium ions, the potassium ions and the sodium ions are successively precipitated through adjusting the pH value, thus the calcium ions, the magnesium ions, the potassium ions and the sodium ions difficultly separated in common manganese sulfate are separated at one step, and the obtained product can meet the requirement of high-purity manganese sulfate for producing battery-grade or electronic-grade manganese-based raw materials on the contents of the calcium ions, the magnesium ions, the potassium ions and the sodium ions. The method has the advantages of fewer impurity removal agent adding times, simple process, low cost, remarkable impurity removal effect, high purity and obtained manganese sulfate yield and the like, and is easy to produce on large scale.

The present invention relates to equipment for removing impurities in sesame and cleaning the sesame, in particular to an impurity removal cleaning machine for the sesame. The impurity removal cleaning machine is provided with a cleaning groove, a sesame storage bin is installed above the front end of the cleaning groove, an impurity removal bucket is installed at the top of the sesame storage bin, the lower portion of the sesame storage bin is in an inverted-cone shape, a discharging tube is arranged at the bottom of the sesame storage bin, and a movable cover plate is installed on a discharging port of the discharging tube. A rotary shaft is arranged in the cleaning groove, an auger is arranged on the rotary shaft, a filter net I is installed at the bottom of the rear end of the cleaning groove, and a mud sediment groove is formed below the filter net I. A mud discharging tube is arranged at the bottom of the mud sediment groove, the tail end of the rotary shaft is a hollow blind tube with an outer open end, an opening is formed in the side wall of the hollow blind tube, a sesame scooping hopper is installed on the opening and provided with a circular-arc-shaped filter net II, baffles are arranged at the two ends of the filter net II, and a sand discharging tube is installed on the lower portion of the rear end of the cleaning groove. Cleaning and impurity removing of the sesame are finished in the same equipment in a one-off mode and performed at the same time, the multiple operation processes of cleaning, sand and stone removing, impurity removing and the like are omitted, working efficiency is high, and cleaning and impurity removing effects are good.

The invention relates to a coin sorting machine. The coin sorting machine comprises a sorting device (1), a temporary storage device (2) and a storage device (3) which are arranged in sequence on a frame (6) from top to bottom, wherein the sorting device (1) is used for sorting coins of different currency values; the temporary storage device (2) is for sorted coins of each face value to wait for confirmation of the currency values; the storage device (3) is used for storing each coin of a confirmed currency value; the sorting device (1) comprises a sorting disk (11), an elastic rotating disk (2) arranged on the lower side of the sorting disk (11), and a transmission mechanism (13) for driving the elastic rotating disk (12) to rotate relative to the sorting disk (11); the sorting device (1) is used for storing coins of different currency values through rotation of the elastic rotating disk (12) relative to the sorting disk (11) and a corresponding notch and a coin outlet in the sorting disk; the sorted coins enter the temporary storage device (1) to wait for confirmation by each customer in order to be returned and stored. By adopting the coin sorting machine, possible contradiction generated by the difference between a value estimated by the customer and a value counted in a bank can be greatly reduced.

The present invention discloses a method for cleaning copper electrolyte to remove impurities; first, bismuth salt is used as a chemical precipitator to remove arsenic, antimony and bismuth in the electrode by co-precipitation, and solid-liquid separation is carried out; second, the obtained solid precipitate is subjected to precipitator alkali-soaking regeneration by using sodium hydroxide; third, the obtained impurity-removed liquid is subjected to segmental electrodeposition copper removal by using insoluble lead as an anode and stainless as a cathode, and a post-copper removal liquid is returned to an electrolytic system. The method has the advantages of low investment, good process simplicity, good operational convenience, good impurity removal effect and zero pollution, efficient and low-cost removal of the impurities such as arsenic, antimony and bismuth in open circuit electrolyte is achieved, and copper recycling and electrolytic waste liquid purification and reuse are achieved.

The invention relates to the field of chemical industry, in particular to a process for processing natural rubber. The process comprises procedures of crushing, creping, granulating, baking, weighing and packaging; the process is characterized by using a twin-roll machine for prewashing and extruding after crushing; during the granulating process, a vibration screen is added for separating water and glue from purities; the granulating procedure is repeated for 3 times; and the creping procedure is repeated for 10 times. According to the processing process of the invention, a selection range of raw materials can be widened; according to the process, the hazardous substances such as impurities and ashes and the like of the rubber can be removed; the rubber can obtain excellent consistence, and can satisfy requirements of producing high-quality products such as radial ply tires; and the similar imported materials can be replaced, so that the current situation of importing the similar rubber can be changed.