18 results about "Calcium hypochlorite" patented technology

This invention discloses a drying device for calcium hypochlorite production, relating to the field of calcium hypochlorite production technology. The technical solution includes a drying shell with a drying mechanism inside and a material conveying and preheating mechanism at the top. The drying mechanism includes a square rod located inside the drying shell, with both ends connected to the inner walls of the drying shell via bearings. A second motor is fixedly mounted on one side of the drying shell, with its output end fixedly connected to the square rod. Two drying components are located outside the square rod, each including a rotating sleeve fitted around the square rod and slidably connected to it. Multiple rotating plates are fixedly connected to the outside of the rotating sleeve. A cylinder and side circular plates are fitted around the rotating sleeve, and the rotating sleeve is rotatably connected to the side circular plates and cylinder. An opening is provided on one side of the cylinder to facilitate the drying of calcium hypochlorite, resulting in high drying efficiency and uniform drying.

The application discloses a kind of iron wurtzite and sulphide iron ore mineral asynchronous flotation separation method, belong to nonferrous metal sulphide mineral flotation technical field;The application promotes the flotation of iron wurtzite by slurry aeration, realizes the asynchronous flotation of iron wurtzite, pyrite and pyrrhotite by means of high selectivity collector CTB-2 and oxidant calcium hypochlorite, solves the problem of difficult separation of iron wurtzite and pyrrhotite, and uses high concentration copper sulfate as depressor to rapidly improve the grade of zinc concentrate, uses ferrous sulfate to realize the sulfur-free flotation of sulfur concentrate, and finally obtains high-quality zinc concentrate, first sulfur concentrate (pyrite) and second sulfur concentrate (pyrrhotite) products.The application optimizes and simplifies the beneficiation process, cancels the magnetic separation step in the traditional process, and realizes efficient separation of zinc and sulfur through single flotation method.

The invention discloses a modified cellulose acetate dialysis membrane and a preparation method thereof.The preparation method comprises the following steps that after a cellulose acetate membrane is hydrolyzed for 1 min, the acetyl part of the cellulose acetate membrane is removed, then the cellulose acetate membrane with the acetyl part removed is subjected to an oxidation reaction, and the cellulose acetate membrane with the acetyl part removed is obtained; a selective oxidation catalyst A and / or a co-catalyst B are / is used in the oxidation reaction process, and an oxidant C is one of sodium hypochlorite, sodium chlorite, calcium hypochlorite, hydrogen peroxide, persulfate or sodium periodate; and then adding chitosan which is subjected to crosslinking modification by dialdehyde cellulose to carry out grafting reaction. According to the method, the grafting effect can be optimal only through the synergistic cooperation of the carboxyl active site amount and the crosslinking degree of the chitosan, and the urea adsorption capacity and the blood compatibility of the cellulose acetate membrane are remarkably improved.

The utility model relates to a bleaching liquid dechlorination device in calcium hypochlorite production, which comprises a reduction kettle, a vacuum dechlorination tower and a tail gas alkali absorption tower, an inlet of the reduction kettle is communicated with a bleaching liquid source in the calcium hypochlorite production, and a liquid outlet of the reduction kettle is communicated with an inlet of the vacuum dechlorination tower. The exhaust port is communicated with the inlet of the tail gas alkali absorption tower, and the hydrochloric acid feeding port is communicated with an external hydrochloric acid source; an outlet of the vacuum dechlorination tower is communicated with an inlet of the tail gas alkali absorption tower; an alkali liquor feeding port of the tail gas alkali absorption tower is communicated with an external alkali liquor source, an outlet of the tail gas alkali absorption tower is communicated with a chimney, and a liquor outlet of the tail gas alkali absorption tower is communicated to a calcium hypochlorite production line. The device can effectively improve the dechlorination effect of the bleaching liquid, simplify the process flow, reduce manual intervention, lower the production cost and improve the economic benefit.

The application provides a metal ore dressing wastewater processing method and device, and relates to the technical field of wastewater treatment. The metal ore dressing wastewater processing method comprises the following steps: step S1, rapid oxidation treatment, in the first stage, 60% of the total amount of calcium hypochlorite and phosphate are added to the wastewater and stirred to generate first-stage wastewater; step S2, deep oxidation treatment, in the second stage, 40% of the total amount of calcium hypochlorite is added to the first-stage wastewater and stirred to generate second-stage wastewater. A wastewater pretreatment device is used for the first stage of wastewater treatment in the metal ore dressing wastewater processing method. According to the scheme, efficient oxidation of ammonia nitrogen is realized by two-stage calcium hypochlorite addition, and Ca 2+ PO4 3+ Hydroxyapatite is generated to fix heavy metals, residual reagents are simultaneously controlled, and the treated water can be directly used for the flotation process.

Disclosed is a process for removing impurities from an intermediate product in battery material production including a) contacting a first intermediate product with a first aqueous medium to obtain a second intermediate product; and b) contacting the second intermediate product with a stream of a second aqueous medium until a conductivity of the stream of the second aqueous medium after contacting the second intermediate product is below about 1,000 micro-Siemens per centimeter (μS / cm).

This invention pertains to feeding equipment, and more specifically to the field of calcium hypochlorite preparation. The invention discloses a quantitative feeding device for calcium hypochlorite preparation, comprising a base. Both sides of a first hydraulic cylinder are connected to a first feeding pipe via connecting rods. One of the first feeding pipes passes through a feeding port. A first piston is slidably connected inside the first hydraulic cylinder, passing through the bottom of the first hydraulic cylinder and connected to a moving plate. Second feeding pipes are symmetrically fixed on both sides of the moving plate, and the second feeding pipes are slidably connected to the inner sides of the first feeding pipes. In this quantitative feeding device for calcium hypochlorite preparation, the second feeding pipes extend and retract relative to the first feeding pipes, facilitating adjustment of the overall capacity of the first and second feeding pipes to achieve quantitative feeding. A stirring rod rotates while moving downwards and extending into the left side of both the first and second feeding pipes, facilitating unblocking and preventing material blockage.

The present application relates to the field of sludge resource utilization, in particular to the technical field of sludge resource treatment method under low-carbon mode, more specifically to a method for improving the anaerobic digestion efficiency of residual sludge under low-carbon mode. The residual sludge is pretreated by calcium hypochlorite combined with low-temperature hydrolysis, which can significantly improve the anaerobic digestion efficiency. According to the calculation, the anaerobic digestion soluble COD of the treated residual sludge is 11.20 times higher than that of the blank group, the cumulative methane yield is increased by 163.9%, and the maximum methane production rate is increased by 158.8%. The daily methane production is increased by 57.9% compared with the blank group. The unit methane carbon emission is reduced by 45.6% compared with the blank group.

The application discloses a method for removing chlorine from a zinc sulfate solution containing chlorine by using ozone or ozone air, and ozone or ozone air generated by an ozone generator is introduced into a closed pressure-adjustable container containing the zinc sulfate solution containing chlorine, and oxidation dechlorination is carried out in the container at normal temperature or under the natural temperature condition of the solution; low-chlorine zinc sulfate solution and mixed waste gas containing oxygen and chlorine gas are obtained; the mixed waste gas is introduced into saturated limewater or a sodium alkali solution, and chemical products of sodium hypochlorite or calcium hypochlorite are obtained. The application adopts ozone or ozone air to remove chlorine from the zinc sulfate solution containing chlorine, and has the advantages of simple process, high dechlorination efficiency, comprehensive recovery of chemical products of calcium hypochlorite or sodium hypochlorite for reuse or sale, less waste, no sodium chloride accumulation, and good social and economic benefits.

The purpose of the present invention is to simplify, and not complicate, the configuration of a device for generating a chlorine-containing gas. This chlorine-containing gas generation device (100) generates a chlorine-containing gas that contains at least one of chlorine dioxide gas and chlorine gas, the chlorine-containing gas generation device (100) comprising: a storage part (10) that stores calcium hypochlorite powder; a gas supply part (20) that supplies a raw-material gas to the storage part (10); and a chlorine-containing gas supply part (30) that supplies, to the outside of a device body (B), a chlorine-containing gas generated due to the raw-material gas coming into contact with the calcium hypochlorite powder.

The utility model discloses a flushing device for a calcium hypochlorite laboratory. A vertical pipe and a guide hole are arranged on a mounting seat; a plurality of branch pipes extend out of the vertical pipe through connecting pieces, and a normal-temperature faucet is arranged on one branch pipe and can be used for normal-temperature cleaning. A clamping seat is arranged on one branch pipe, a handheld flushing spray head is arranged on the clamping seat, and multiple parts can be flexibly flushed through the handheld flushing spray head; an extension connecting pipe on the handheld flushing nozzle penetrates through the guide hole and is connected with the water source end, and the handheld flushing nozzle is extended through the extension connecting pipe; one branch pipe is vertically arranged, the instant heater is connected to the vertical branch pipe, the upper portion of the instant heater extends out of the bent pipe, the splash-proof sleeve is arranged at the end of the bent pipe, a water source in the branch pipe is instantly heated through the instant heater, and splash prevention during cleaning is achieved through the splash-proof sleeve. And corrosion caused by splashing of the medicament to human bodies or utensils and instruments during cleaning is avoided.

The invention discloses a device for adding a solid calcium hypochlorite disinfectant, which comprises a water inlet pipe used for being connected with a water source and a water outlet pipe used for outputting a disinfectant-containing solution, and a dissolving device used for dissolving disinfectant balls is arranged between the water inlet pipe and the water outlet pipe. A medicine feeding device for enabling quantitative medicine balls to enter the dissolving device is arranged above the dissolving device, and the medicine dissolving device and the medicine feeding device are both arranged on the mounting plate. When the content of the disinfectant in the water source is not enough, the medicine feeding device feeds the solid medicine balls supplemented with the disinfectant into the dissolving device, and the content of the disinfectant is increased by dissolving the medicine balls, so that the residual chlorine in the water source meets the requirement.

This application relates to the technical field of hazardous waste treatment, specifically to a method for treating acephate waste liquid. The method includes: pretreatment, hydrolysis reaction, oxidation reaction, filtration, and wastewater treatment. The hydrolysis reaction involves adding a composite alkali agent to the pretreated waste liquid to conduct a hydrolysis reaction, obtaining hydrolyzed waste liquid. The composite alkali agent includes 1-1.5 wt.% modified magnesium oxide and 4-8 wt.% calcium hydroxide; the amount of composite alkali agent added is 3-5 times the weight of the pretreated waste liquid. The oxidation reaction involves adding calcium hypochlorite to the hydrolyzed waste liquid to conduct an oxidation reaction, obtaining oxidized material; the molar ratio of calcium hypochlorite to residual hydrogen sulfide in the hydrolyzed waste liquid is (1.2-1.5):1. Compared to traditional direct incineration methods, the treatment method of this application can solve problems such as incineration corrosion, flue blockage, and high treatment costs, and also has the characteristics of energy saving and high efficiency.

This invention provides an impregnated paper with anti-mildew, antibacterial, and antiviral properties, and its preparation process. The impregnated paper comprises the following raw materials by percentage: 0.8-1.4% plant extract, 45-57% film-forming resin, 1-1.5% calcium peroxide, 1-1.5% protamine, 0.5-0.8% capsid protein, 0.3-0.5% oligosaccharide chain protein, 3-4% nano-sepiolite, 0.8-1.2% calcium hypochlorite, 0.1-0.2% silver-loaded nanoparticles, 6-8% slow-release carrier, 0.6-0.8% photoinitiator, 0.3-0.5% surfactant, 3-4% plasticizer, 0.1-0.2% curing agent, 0.2-0.3% dispersant, 0.2-0.4% crosslinking agent, 0.2-0.3% moisture-proof agent, 0.2-0.4% antioxidant, 0.1-0.3% antistatic agent, and the balance being solvent. The combined effect of the components in this invention enables the impregnated film paper to possess excellent comprehensive properties such as mildew resistance, antibacterial properties, and antiviral properties, reducing the probability of bacterial and viral transmission and improving the practicality and safety of the impregnated film paper in decorative panels for underfloor heating environments, humid areas (such as bathroom cabinets), or medical facilities.

The invention discloses a calcium hypochlorite sustained-release tablet and a preparation method thereof, and relates to the field of calcium hypochlorite sustained-release agents.The calcium hypochlorite sustained-release tablet aims at solving the problem that in the prior art, the limited chlorine release period is short, and the adopted technical scheme is that the amount of calcium hypochlorite is increased to 50% or above, copper sulfate is added to improve the sterilization effect, the proportion of bentonite to carboxymethylcellulose is controlled, and the calcium hypochlorite sustained-release tablet is prepared. The raw materials are dried and sieved before being mixed, and finally calcium hydroxide and copper sulfate are added. Calcium hypochlorite is compounded into a slow-release system, so that the release of available chlorine is more uniform, the release period of available chlorine is prolonged, the release period of available chlorine can be further prolonged by high-content calcium hypochlorite, and the pH of the system can be more uniform by drying, sieving and adjusting the mixing sequence of raw materials.

A process of leaching a metal, such as gold, from a feed source includes combining the feed source with a salt (such as a chloride salt) and / or a leaching reagent, such as a 3% solution to a 35% solution of sodium dichloro-s-triazinetrione dihydrate or a 3% solution to a 35% solution of anhydrous sodium dichloro-s-triazinetrione or a 3% solution to a 35% solution of trichloro-s-triazinetrione or a 3% solution to a 35% solution of calcium hypochlorite in a leach medium to form a feed slurry, and leaching a metal from the feed slurry to form a pregnant leach liquor followed by recovering the metal from the pregnant leach liquor and recycling residual leach solution to form additional feed slurry. The process is cyanide-free and / or arsenic free.

The utility model discloses a calcium hypochlorite drying device, including support frame and connecting on the support frame drying box, the top hinged of drying box has the box cover, and the inside of drying box is equipped with stirring subassembly, and stirring subassembly controls rotation through the drive component of installation on support frame, and the bottom of drying box is connected with the discharge pipe, and the discharge pipe is installed with solenoid valve, and the top of discharge pipe is connected with arc filter screen, and the bottom inner wall of drying box of discharge pipe both sides is equipped with arc groove, and the inside of arc groove is equipped with heating pipe, and the outside of heating pipe is equipped with sealed fender. The utility model discloses through heating pipe to the calcium hypochlorite in drying box heating, and through stirring subassembly, the material of agglomeration is scattered, makes material and can carry out the sufficient drying. Make dry more uniform, and reach certain small particle only can fall down, guarantee the material after drying not to have the appearance of agglomeration, guarantee dry quality, need not rework.

The utility model discloses a calcium hypochlorite decentralized sterilization machine, and particularly relates to the technical field of sterilization devices, the calcium hypochlorite decentralized sterilization machine comprises a main box body, a spraying mechanism is arranged on the inner wall of the main box body, a transmission mechanism is arranged in the spraying mechanism, a partition plate is fixedly connected to the inner wall of the main box body, and a turnover mechanism is arranged between the partition plate and the inner wall of the main box body. And the spraying mechanism comprises two reciprocating screw rods rotationally arranged on the inner wall of the main box body, the surfaces of the two reciprocating screw rods are in threaded connection with moving blocks, and limiting rods are arranged on one sides of the two moving blocks. Through the arrangement of the spraying mechanism, materials in the overturning cylinder are sprayed more uniformly, dead angles do not exist easily, the sterilization effect is better, through the arrangement of the transmission mechanism, the spraying ring stably moves left and right on the overturning cylinder, the spraying ring moves more smoothly, only one motor is used for driving, and the cost is further saved.