40results about How to "High iron removal rate" patented technology

The invention discloses a method for jarosite precipitation and deironization by pressure acid leaching of high-iron zinc-sulphide concentrate in a kettle, which comprises the following steps: conveying the high-iron zinc-sulphide concentration and zinc oxide ore in a mixing ratio of 23:1 into an autoclave; in the zinc leaching process, controlling the acidity to convert most of iron into a slag phase; converting a solid phase of a small amount of leached iron into a water phase in leachate; making the leachate enter an adjusting tank, and adding low-grade zinc oxide ore or zinc precipitation residue for neutralization to make the iron generate hydrolytic precipitation and become the slag phase; and discharging the iron along slag through filter pressing, and performing purification treatment on generated qualified supernatant directly. Because the deironization is carried out in the kettle, the method has the advantages of short flow, simple and convenient operation, low treatment cost, high deironization rate, low zinc content in the slag, high zinc recovery rate and the like. The zinc leaching reaches over 98 percent, and the Fe contained in the leachate is less than or equal to 20 mg/l.

A metal remover consists of organic carboxylic acid 30-99wt% and organic phosphoric acid 1-70wt%. It can eliminate iron element and various metal elements. It doesn't consist of nitrogen, sulfur, chlorine and metal elements so it's cheap, simple, convenient and no after treatment harm.

The invention relates to a preparation method of non-pickling raw kaolin ore. The method comprises the following steps of: (A) grinding and screening raw kaolin ore to obtain a raw screening material; (B) pouring the raw screening material into a special proportioning device and a container; and (C) sequentially carrying out the following steps in the container: forcefully stirring to prepare slurry; precipitating and separating; eddying and separating; blanching to remove iron; precipitating and dewatering; pressing the slurry and filtering water; detecting indexes; and obtaining kaolin concentrate. The former three steps (A), (B) and (C) form a necessary process for obtaining the kaolin concentrate, a strong reducing agent used in the step (C) has higher reduction potential compared with the traditional hydrosulfite and low declination speed of the reduction potential to be only 1/5 the declination number of the reduction potential of the traditional hydrosulfite, and the step enhances the effect of removing coloring impurities in the kaolin. Moreover, the reducing agent has the action of controlling reduction and has the advantages of good safety performance, pollution-free production and use, high iron-removal rate, and the like.

The invention relates to a technology for preparing manganese carbonate from silver-manganese ores. The manganese leaching rate of the technology is greater than 98%, and the later stage silver leaching rate can reach 95%; Fe in a manganese leaching liquid can be completely removed through pre-oxidation and an E.Z. goethite process, and the Fe content in the iron removed liquid is less than 1mg/L, so the iron removal rate reaches 99.99%; heavy meal impurities in the manganese leaching liquid can be removed through a sulfuration process, and the removal rates of Co, Ni and Zn reach 97.19%, 99.84% and 72.10% respectively, so the purifying effect is good; and a manganese carbonate product is successfully prepared, and the quality of the product reaches requirements of one-grade products.

The invention discloses a preparation method of high-purity quartz sand, and belongs to the technical field of mineral refining, and the preparation method comprises the following steps: crushing: crushing quartz sand crude ore into quartz sand particles; ultrasonic scrubbing: performing ultrasonic scrubbing on quartz sand particles; magnetic separation: selecting high gradient magnetic separatorfor three times magnetic separation of quartz sand fine sand; acid leaching: performing microwave heating quartz sand after flotation, then stirring and soaking with a 10% oxalic acid solution; flotation: mixing the quartz sand after acid leaching with water and putting into a flotation machine, adjusting the pH value in three steps, and using different collectors for flotation at the same time; drying and bagging: drying in a vacuum drying oven, and vacuum bagging after cooling. The preparation process is simple, reasonable and efficient in design; iron impurities in the quartz sand can be removed by ultrasonic scrubbing, multiple magnetic separation, microwave heating and acid leaching and flotation; the iron impurities in the prepared high-purity quartz sand are reduced to below 0.35 mg/kg; and the product has stable quality and high efficiency, and is suitable for large-scale popularization and application.

The invention discloses a regenerated rubber powder production device. The regenerated rubber powder production device is characterized in that tyre blocks formed through rough crushing of a tyre are crushed into coarse particles through a rubber coarse crushing pulverizer firstly, and the coarse particles are subjected to magnetic separation. Compared with the method that rubber is crushed into powder are then subjected to magnetic separation, a mode adopted by the device has the advantages that a steel wire is not fully smashed into iron powder, the efficiency of magnetic separation is high, and the iron removing ratio is high; before the coarse particles are delivered to a rubber powder crushing pulverizer, the coarse particles are subjected to the magnetic separation through an all-magnetic roller, so that iron-containing rubber particles are completely removed, and the iron-containing rubber can be crushed by the rubber coarse crushing pulverizer, therefore, through two-time coarse crushing pulverizer by the all-magnetic roller, the removing ratio of steel wire can reach above 99%, consequently, the content of iron powder is finished rubber powder is greatly reduced, and the production efficiency is high; an elastic part of a second moving sieve is replaced by an oscillating structure which is composed of an oscillating arm and a door-shaped frame, so that the screening efficiency is high, and the service life is greatly prolonged.

The invention relates to a vanadium iron separation method for vanadium-containing solution. According to the technical scheme, according to the potassium ion in potassium salt, specifically, the ratio of substance iron ion in the vanadium-containing solution is (1-6):1, the potassium salt is added into the vanadium-containing solution and is stirred for 1-3 hours at 80-95 DEG C, and reaction solution is obtained. The reaction solution is stationary for 3-24 hours at 0-10 DEG C and under light-proof conditions, the solid-liquid separation is carried out, the solution after the vanadium iron separation and filter cake are obtained; and the solution after the vanadium iron separation is used for further purification and enrichment, and the filter cake is used for further purification of (K3[Fe (C2O4) 3].3H2O). According to the vanadium-containing solution, the vanadium concentration is 1-4 g/L, the iron concentration is 3-10 g/L, the oxalate concentration is 10-30 g/L, and the pH valueis 0-5. The potassium salt is more than one of potassium chloride, potassium sulfate, potassium oxalate and potassium nitrate. The vanadium iron separation method for the vanadium-containing solutionhas simple process and low cost, and has the characteristics of good vanadium iron separation effect, high comprehensive utilization rate of resources and remarkable environmental protection benefit.

The invention discloses a system for circularly grinding and deironing reclaimed rubber. The system has the beneficial effects that firstly, tires coarsely ground into blocks are firstly ground into coarser particles by a rubber coarse grinder, and then magnetic separation is carried out; compared with existing systems for directly grinding rubber into powder and then carrying out magnetic separation, the system has the advantages that steel wires are not completely ground into iron powder, the magnetic separation efficiency is high, and the iron removal rate is high; secondly, the coarse particles are subjected to magnetic separation in full-magnetic rollers before reaching a rubber powder grinder, the rubber particles containing iron are completely removed, and the rubber containing iron can return to the rubber coarse grinder to be ground. Therefore, through two-time magnetic separation in the full-magnetic rollers, the steel wire removal rate can be more than 99%. The system greatly reduces the content of iron powder in a finished rubber powder product and has high production efficiency.

The invention provides a hydrogenation system for an iron containing hydrocarbon raw material and a method thereof. The hydrogenation system comprises a pretreatment reaction zone, a first gas-liquidseparation zone, a main reaction zone and a second gas-liquid separation zone, wherein the interior of the pretreatment reaction zone is provided with at least one fixed bed reactor; the interior of the fixed bed reactor along a material flowing direction is successively filled with at least one hydrogenation protective agent and at least one first hydrodemetallization agent; the interior of the main reaction zone is provided with at least one fixed bed reactor; and the interior of the fixed bed reaction along a material flowing direction is successively filled with at least one second hydrodemetallization agent and at least one hydrodesulfurization agent. The system provided by the invention has high iron tolerant capacity and iron intercepting capacity in the pretreatment reaction zone,and overcomes the problem of insufficient capacity of intercepting an iron containing compound during long-period operation of the pretreatment reaction zone in the prior art.

The invention discloses an iron removal device for garbage pretreatment, and belongs to the technical field of garbage treatment. The iron removal device is characterized by comprising a conveying belt, an iron removal device body and a collecting box, the iron removal device body is located above the end of the conveying belt, the collecting box is located on the right side of the end of the conveying belt, and theiron removal device body comprises a rack. When a steel wire rope is wound, the iron removal device body is driven to ascend, and on the contrary, when the steel wire rope is slowly released, the iron removal device body is driven to descend. When the iron removal device body descends, the distance between the iron removal device body and the conveying belt is closer, namely, the magnetic force of an excitation system is improved. When the iron removal device body ascends, the magnetic force of the excitation system is reduced, so that the overall adsorption capacity of the iron removal device is conveniently controlled, adjustment can be conveniently carried out according to actual conditions, the iron removal rate is improved, and the interior of the incinerator operates stably. The invention solves the problems that: an existing iron removal device is generally fixedly installed, the height of a suspended iron remover is inconvenient to adjust, part of magnetic metal at the upper end of a conveying belt cannot be effectively removed, and then stable operation of the boiler is affected.

The invention relates to the field of quartz ore treatment equipment, in particular to a quartz ore powder treatment system which comprises a fixing frame, a feeding port, supporting side plates, positioning side plates, a rotating roller, a motor frame and a driving motor. Positioning side plates are fixedly installed on the side walls of the two supporting side plates through bolts, a rotating roller is installed between the two positioning side plates, the outer wall of the rotating roller is symmetrically sleeved with silicon rubber cases, elastic cloth adheres to the outer walls of the silicon rubber cases, a motor frame is welded to the outer side wall of the fixing frame, and a driving motor is installed on the upper end face of the motor frame; an output shaft of the driving motor is connected to the center of the side wall of one rotating roller through a connecting shaft, the top of the feeding opening is welded with the feeding opening used for conveying quartz powder, the inner section of the feeding opening is in a V shape, the inner wall of the fixing frame is welded with a limiting guide plate, and the iron removal device has the characteristics of being high in iron removal rate and low in use cost.

The invention relates to the field of plastic breaking, and discloses a resourceful treatment system for industrial rubber waste. The system comprises a slabbing machine, a smashing machine and a screening machine. The slabbing machine is connected with the smashing machine, and the smashing machine is connected with the screening machine. The screening machine comprises a first screening barrel,a second screening barrel and a third screening barrel which are horizontally and coaxially arranged in sequence from inside to outside, a first motor driving the first screening barrel to rotate is arranged below the first screening barrel, a first gear and a second gear are fixedly connected to an output shaft of the first motor in the longitudinal direction, the first gear is engaged with a first gear ring, the first gear ring is fixedly connected with the lower end edge of the third screening barrel, the second gear is engaged with a third gear, a second gear ring is arranged in the thirdgear, and the second gear ring is fixedly connected with the lower end edge of the second screening barrel. By means of the resourceful treatment system for the industrial rubber waste, a rubber mixture can be scattered, and iron-containing impurities in the mixture can be more comprehensively attracted.

The invention belongs to the technical field of waste material retreatment, and particularly relates to a method for removing iron in a waste nickel-metal hydride battery. The method comprises the steps of: separating a sulfonated diaphragm material and a non-sulfonated diaphragm material from a waste nickel-metal hydride battery; dissolving the non-sulfonated diaphragm material, and separating out rare earth compound precipitates to obtain a nickel-cobalt solution; finely crushing the sulfonated diaphragm, spraying the crushed sulfonated diaphragm into a combustion furnace through a sprayingdevice, and carrying out combustion in an oxygen-enriched air atmosphere; pressurizing mixed gas generated by combustion, and mixing and reacting the pressurized mixed gas with the nickel-cobalt solution in a high-pressure kettle; and after the reaction is finished, transferring middle-upper-layer clear liquid to obtain a deeply purified nickel-cobalt solution, and directly entering a subsequent ternary precursor synthesis process. The method is simple in process, sulfur in the sulfonated diaphragm can enter a nickel-cobalt solution pool in the form of a mixture of sulfur dioxide and air for iron removal, the removal rate is larger than 99.5%, and sulfur reutilization is achieved; and the product obtained after SO2 oxidation is SO4<2->, other impurity ions are not introduced, the iron removal cost is low, and the method has great industrial value.

The invention discloses a technology for producing mineral water. The technology comprises the following steps: selecting mountain spring water in the Dabie Mountain region as raw water, filtering themountain spring water by an ultrasonic filter, filtering the mountain spring water by an activated carbon filter, removing iron by a manganese sand filtering device, and sterilizing the mountain spring water by ultraviolet rays; sterilizing the mountain spring water by ozone; performing an UH reverse osmosis technology; introducing a clean mixed gas, and filtering the mountain spring water by a titanium filter; and performing aseptic filling by a blowing and filling integration machine to obtain the mineral water. The technology has the advantages of effectiveness in filtration, excellent adsorption effect on organic matters, and good interlayer exchange, adsorption and polymerization effects; and an auxiliary filler layer structure is designed by the applicant according to the structureof existing grass-planting bricks in order to effectively fix a main filler layer and effectively prevent the main filler layer from being obstructed, so the main filler layer has a good hydraulic load, and mineral substance elements beneficial for human bodies, such as potassium, lithium, zinc and metasilicate ions, are well reserved.

The invention discloses a device for circularly grinding and deironing reclaimed rubber powder. The device has the beneficial effects that firstly, tires coarsely ground into blocks are firstly ground into coarser particles by a rubber coarse grinder, and then magnetic separation is carried out. Compared with existing devices for directly grinding rubber into powder and then carrying out magnetic separation, the device has the advantages that steel wires are not completely ground into iron powder, the magnetic separation efficiency is high, and the iron removal rate is high; secondly, the coarse particles are subjected to magnetic separation in full-magnetic rollers before reaching a rubber powder grinder, the rubber particles containing iron are completely removed, and the rubber containing iron can return to the rubber coarse grinder to be ground. Therefore, through two-time magnetic separation in the full-magnetic rollers, the steel wire removal rate can be more than 99%; after the rubber particles enter the next procedure of finely grinding the rubber particles into rubber powder to be ground, little iron powder in the rubber powder is removed via an iron powder collecting box. The device greatly reduces the content of iron powder in the finished rubber powder product and has high production efficiency.