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1370results about How to "Improve recycling effect" patented technology

High-magnetic heavy-metal ion adsorbent carrying conductive high molecules and preparation method thereof

The invention discloses a high-magnetic heavy-metal ion adsorbent carrying conductive high molecules and a preparation method thereof. The adsorbent comprises high-magnetic microspheres carrying conductive high molecules, each of which comprises a Fe3O4 polycrystal sphere cluster, an amorphous SiO2 protective layer and a polypyrrole adsorption outer layer from inside to outside. The preparation method of the adsorbent is realized in a way that: carrying out a solvent thermal reduction reaction on soluble ferrites to obtain the Fe3O4 magnetic sphere cluster; carrying out the basic hydrolysis by using tetraethoxysilane to obtain the Fe3O4-SiO2 nuclear shell sphere cluster; and finally, carrying out the free radical polymerization reaction on the pyrrole monomers to obtain the Fe3O4-SiO2-polypyrrole functional particles. The heavy-metal ion adsorbent has the characteristics of stable property, high adsorption rate and reproducibility, has favorable adsorption and recovery properties on dichromic ions, and has the advantages of simple preparation process, low material price and no environmental pollution. Compared with the normal chemical absorbent, the product of the invention is convenient to use and achieves the effects of waste water treatment, pollution abatement and environment protection.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI

Environmentally-friendly medical waste treatment device

An environmentally-friendly medical waste treatment device comprises a base, a treatment box is arranged on the upper end of a pillar, a crushing mechanism is arranged on the upper side of the inner part of the treatment box, a filter screen is arranged on the inner part of the treatment box, a vibration mechanism is arranged at the lower end of the filter screen, a cleaning mechanism is connectedto the left side wall of the treatment box, a conveying mechanism is installed on the upper end of a frame, and a collection mechanism is arranged on the right side of the upper end of the base. Thedevice is reasonable in structure and design, wherein a first crushing roller and a second crushing roller rotate relatively through a counterclockwise first motor to crush medical wastes; the filterscreen realizes solid-liquid separation, and a second motor drives a cam to rotate to slightly vibrate the filter screen, so that the efficiency of the solid-liquid separation is improved; a water pump sprays disinfectant through a spray nozzle to the medical wastes for disinfection treatment; an electromagnet in a sieving room can adsorb and screen some metal needles or scissors in the wastes, sothat the waste of resources is avoided, the rest of the wastes finally enter a collection box for compression, the volume of the wastes is reduced, and the transportation is convenient.
Owner:THE AFFILIATED HOSPITAL OF QINGDAO UNIV

Production technology of high-grade molybdenum concentrate

The invention discloses a production technology of high-grade molybdenum concentrate, which comprises the following steps: rough molybdenum concentrate is obtained by roughing crude molybdenum ore, the rough molybdenum concentrate is concentrated and removed reagent through a thickener, underflow enters a hydraulic swirler to be graded previously, overflow after the grading enters a primary flotation column to be selected, the underflow after the grading enters a horizontal ball grinding mill to be reground, and after the regrinding, the ore discharge enters the hydraulic swirler to be regraded; selected concentrate from the primary flotation column is cleaned by a vertical ore mill to enter a secondary and a tertiary flotation columns to be selected, and the selected concentrate from thetertiary flotation column directly enters or enters a quartic or a quintic flotation columns to be selected after being cleaned by a second section of the vertical ore mill to obtain the high-grade molybdenum concentrate; the selected tailings from the primary flotation column is tertiary scavenged by a flotation machine, and the scavenged concentrate tailings from the tertiary scavenging enters the next procedure. The technology adopts the flotation columns and the flotation machine, so the flow is short, the agent system is simple, the adaptability of the crude ore is strong, and the molybdenum concentration ratio is high, the molybdenum concentrate has high grade, large yield and high recycling rate so as to provide excellent raw material to the following molybdenum chemical engineering and further processing.
Owner:JINDUICHENG MOLYBDENUM CO LTD

Basic copper chloride production method

The invention discloses a method for producing tribasic copper chloride. The method for producing the tribasic copper chloride includes the following steps of: (1) removing impurities from an acidic etching waste solution; (2) adding clean water or a tirbasic copper chloride production mother solution to a synthesis reactor, performing preheating, and then, preheating the acidic etching waste solution whose impurities have been removed and an alkaline solution of sodium hydroxide and mixing the two solutions for a reaction with the pH value and temperature of the reaction being controlled so as to gradually form the tribasic copper chloride, and discharging partial materials after a certain amount of reaction time; (3) filtering the materials discharged from the reaction system, and performing washing, suction filtration, centrifugation and drying on the filtrated residues to obtain the tribasic copper chloride; and (4) performing ammonia nitrogen removal treatment on filtrated liquid. By adopting the method for producing the tribasic copper chloride in the invention, continuous production can be achieved and the tribasic copper chloride with large particle size and high purity can be produced; further, production cost can be reduced and overall process can be integrated; and the method for producing the tribasic copper chloride is advantaged in simple ultimate steps of ammonia nitrogen removal, easiness in operation as well as reduced difficulty and cost of ammonia nitrogen treatment.
Owner:GUANGZHOU KECHENG ENVIRONMENTAL PROTECTION TECH

Recovering system for concrete cement mortar

The invention discloses a recovering system for concrete cement mortar. The recovering system comprises a service rack and a sand and stone separating machine, wherein a mortar water outlet of the sand and stone separating machine is communicated with a mixing tank; a sewage pipeline extending to the upper side of a metering hopper is connected to a sewage pump water outlet arranged in the mixing tank; a setting pond is arranged on one side of the mixing tank; the mixing tank is communicated with the setting pond through an overflowing pipeline; a clean water reservoir is arranged beside the mixing tank; a water outlet pipe of a clean water pump B1 arranged in the clean water reservoir is communicated with a sewage pipe through a one-way valve FG; a one-way valve FW is arranged on the sewage pipe on a front section at the intersection joint of the water outlet pipe of the clean water pump B1; a water outlet pipe of a clean water pump B2 arranged in the clean water reservoir extends to the service rack; and a water pouring pipe is arranged between the setting pond and the clean water reservoir. The recovering system disclosed by the invention has the advantages that the structure is simple and reasonable; and the clean water pump and the sewage pump are adopted for simultaneously supplying materials, so that the wear to the pump body is reduced, the service life of the pump body is prolonged, the recovering effect of mortar water generated by washing a vehicle is remarkably improved and the maintenance cost is greatly reduced.
Owner:郑州新水工机械有限公司

Process for all-wet recovery of valuable elements in complex low-grade sulphide ore

A process for all-wet recovery of valuable elements in a complex low-grade sulphide ore comprises the following steps: crushing and grinding a raw material, sieving the crushed and ground raw material, performing size mixing by use of a sodium hydroxide solution, and after that, performing pressurized oxidizing leaching to obtain an alkaline-leached solution and alkaline-leached residues; acidizing the alkaline-leached solution to obtain a lead sulfate product and a heavy lead solution, and performing potential reduction control step by step on the heavy lead solution to obtain crude selenium powder, crude tellurium powder and a post-reduction solution; performing copper-soaking on the alkaline-leached residues by use of a sulfuric acid solution to obtain copper-leached residues and a copper-leached solution; performing antimony and bismuth soaking on the copper-leached residues by use of an acid liquor containing chloride ions to obtain an antimony-leached solution and antimony-leached residues, feeding the antimony-leached slags to noble metals for recovery, and adjusting the pH of the antimony-leached solution step by step to obtain antimony residues and bismuth residues; adjusting the pH of the copper-leached solution to obtain iron residues and an iron-removed solution, wherein the iron residues serve as a waste water treatment additive, and the iron-removed solution is subjected to zinc dust replacement to obtain copper powder and a post-replacement solution; and merging the post-reduction solution and the post-replacement solution, and performing concentration and crystallization to obtain heptahydrate. The process is good in comprehensive recovery effect, strong in adaptation to the raw material, clean and environment-friendly in process, low in demand on equipment, adjustable in implementation scale and high in practicability.
Owner:JIANGXI COPPER CORP

Method for recycling valuable metal in waste nickel-cobalt-manganese ternary lithium-ion battery

The invention belongs to the field of recycling of valuable materials of waste lithium-ion batteries and particularly discloses a method for efficiently cleaning and recycling valuable metal in a waste ternary lithium-ion battery. The method comprises the following steps that (1) the waste ternary LNCM lithium-ion battery is subjected to short-circuit discharging, disassembly, stripping through abinding agent and smashing screening to obtain an electrode active material; the electrode active material is subjected to reduction-acid leaching, and solid-liquid separation is conducted to obtain acarbon material and an acid leachate containing Li+, Ni2+, Co2+, Mn2+, Fe3+, Al3+ and Cu2+; (2) the pH of the acid leachate is regulated and controlled within 3-5, and Fe3+ and Al3+ in the acid leachate are precipitated; then through solid-liquid separation, impurity-removal filtrate with Li+, Ni2+, Co2+ and Mn2+ is obtained; (3) the pH of the impurity-removal filtrate is adjusted to 1-6, then the filtrate is used as an electrolyte and subjected to rotational flow electrolysis, Cu/Co-Ni alloy composite film is collected at a negative electrode, and MnO2 is collected at a positive electrode. According to the method, a rotational flow electrolysis mode is innovatively adopted, and effective components in the leachate is efficiently recycled.
Owner:CENT SOUTH UNIV

Medical mask recycling machine

The invention discloses a medical mask recycling machine which can crush and sterilize recycled masks, carry out winnowing, distinguishing and collecting on the crushed masks through a draught fan andcan prevent the recycled masks from being reutilized by lawless persons. The medical mask recycling machine is characterized in that a device body is composed of a transverse shell and a vertical shell; the transverse shell is arranged on the top of the vertical shell; the position, corresponding to the vertical shell, of the transverse shell is provided with a communicating slot; the transverseshell communicates with the vertical shell through the communicating slot; one side of the transverse shell is provided with a charging slot; two sets of conveying rolls are arranged in the transverseshell; one set of conveying rolls is composed of at least five conveying rolls transversely and equidistantly distributed; the two sets of conveying rolls are located on the upper and lower sides ofthe charging slot correspondingly; the two ends of a shaft of each conveying roll are connected with the transverse shell through bearings; the shaft of each conveying roll is sleeved with a chain wheel I; the chain wheels I on one set of conveying rolls are connected through a chain I; and the gap between the two sets of conveying rolls communicates with the charging slot correspondingly.
Owner:XUZHOU CHUANGZHISHE GENERAL TECH IND RES INST CO LTD

Spraying robot with automatic visual tracking function

The invention discloses a spraying robot with an automatic visual tracking function. The spraying robot comprises a conveying device, a moving device, an adjusting base, a large arm, a transition arm, a third arm, a rotary connector and a painting device. The adjusting base is mounted on the moving device, a mounting seat is mounted on the upper surface of the adjusting base and is hinged to the large arm, the large arm is hinged to the transition arm, the transition arm is hinged to the third arm, the rotary connector is arranged at the front end of the third arm, and the painting device is mounted at the front end of the rotary connector. The spraying robot has the advantages that tailing materials can be recycled, accordingly, the cost can be saved, surrounding edges can be fitted, and environmental pollution due to falling of the tailing materials in construction sites can be prevented; the spraying robot has the automatic visual tracking function, accordingly, construction personnel and equipment are separated from one another during site operation construction, and automatic construction can be implemented; fitting intensity of the painting device and walls can be adjusted at any time by the aid of load pressure sensors, and accordingly good plastering and tailing material recycling effects can be realized.
Owner:安徽东坚仓储货架制造有限公司
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