108results about "Iron halides" patented technology

The invention discloses a process for separating and recycling scandium, manganese and iron in iron-manganese slag, and belongs to the technical field of metallurgical engineering and comprehensive utilization of secondary resources. The method comprises the following steps: crushing the iron and manganese slag, mixing the crushed iron and manganese slag with a chlorinating agent and a molten salt medium, and carrying out chlorination reaction at 600-850 DEG C, so that iron and manganese are converted into chlorides to volatilize, and scandium is enriched in the slag; the volatile gas is subjected to multi-stage gradient condensation, and manganese and iron concentrates are respectively recovered in different temperature intervals; and leaching-extracting the chlorination residues to obtain a scandium-rich substance. According to the method, source separation and collaborative recovery of iron, manganese and scandium are achieved through pyrogenic process chlorination-condensation, the problems that in a traditional wet process, metal interferes with one another, the process is long, and pollution is heavy are solved, and the method has the advantages of being short in process, small in pollution and high in recycling degree.

The invention discloses a ZnF2 (at) FeF3. 0.33 H2O positive electrode material as well as a preparation method and application of the ZnF2 (at) FeF3. 0.33 H2O positive electrode material. The preparation method comprises the following steps: step 1, uniformly mixing ethanol and PEG-400 to obtain a mixed solvent; 2, ferric nitrate and zinc nitrate are dissolved in a mixed solvent, then an HF aqueous solution is dropwise added into the obtained solution under stirring, after stirring, the obtained mixed solution is transferred into a stainless steel high-pressure kettle to be heated in a closed mode and cooled to the room temperature, a product is washed, centrifuged and dried in vacuum, and powder is obtained; 3, the powder is placed in a tubular furnace and subjected to heat preservation treatment in the argon atmosphere, then the powder is naturally cooled to the room temperature, a product is taken out and ground, and the ZnF2-coated FeF3. 333 H2O material is obtained. By doping ZnF2, FeF3. 0.33 H2O has higher electronic conductivity and a more stable structure, and an all-solid-state lithium battery prepared from the FeF3. 0.33 H2O has higher specific capacity and better cycling stability.

The invention discloses an electronic waste efficient chlorination comprehensive recovery device and method, and relates to the technical field of chemical metallurgy, the electronic waste efficient chlorination comprehensive recovery device comprises a chlorination reaction cavity, a heating system, a vacuum system, an atmosphere control system and a condensation separation system; the heating system is used for controlling the temperature of the chlorination reaction cavity; the vacuum system is communicated with the heating system; the atmosphere control system comprises a chlorine gas source and a protective gas source; and the temperature of the condensation separation system is gradually reduced. Through the high-purity graphite heating assembly, the sealing structure and the atmosphere control system, the highest heating temperature is 1700 DEG C, the temperature limit of 1200 DEG C of a traditional quartz tube furnace can be broken through, the chlorine corrosion problem is solved, chlorine is not leaked, and the environment is not polluted. High-valued recovery of different metal resources can be achieved through low-temperature pyrolysis, high-temperature chlorination volatilization and three-stage condensation settling separation, and the method has the advantages of being low in energy consumption, high in recovery rate, environmentally friendly and the like and is suitable for industrial metal resource recovery.

The invention provides a method for preparing a poly-aluminum and functional silicon material by activating coal gasification slag and waste hydrochloric acid through microwave synergistic mechanical force, and belongs to the technical field of industrial solid waste recycling. The method comprises the following steps that the coal gasification slag is sequentially subjected to microwave radiation treatment and ball milling, activated slag and waste hydrochloric acid are subjected to an acid leaching reaction, and aluminum-iron-containing leachate and silicon-rich slag are obtained; extracting the aluminum-iron-containing leaching solution to obtain an iron-rich organic phase and a purified aluminum chloride solution; performing thermal polymerization reaction on the purified aluminum chloride solution to obtain polyaluminum chloride; the method comprises the following steps: carrying out alkaline leaching reaction on silicon-rich slag and waste alkali liquor, adding a structure-directing agent into a sodium silicate solution, and sequentially carrying out aging, solution pH value adjustment and crystallization precipitation to obtain mesoporous silica. According to the method, the aluminum-silicon leaching rate is remarkably increased through microwave-mechanical force synergistic activation, synergistic and efficient treatment of the three kinds of waste including the coal gasification slag, the waste hydrochloric acid and the waste alkali liquid is achieved, the technological process is closed, the product additional value is high, and the environmental and economic benefits are remarkable.

The invention belongs to the technical field of rutile mother liquor recovery, and particularly relates to an artificial rutile mother liquor recovery processing device and method, and the artificial rutile mother liquor recovery processing device comprises a fluidized bed and a cyclone separator; an air outlet barrel is fixedly connected to the interior of the cyclone separator; a heat exchange channel is arranged on the side wall of the air outlet cylinder; the heat exchange channel is designed to be spiral and is coiled along the side wall of the air outlet barrel; one side of the heat exchange channel is located in an annular gap between the air outlet barrel and the cyclone separator, and the other side of the heat exchange channel is located in the air outlet barrel. By integrating roasting, separating and drying functions, the adaptability of the fluidized bed to an artificial rutile mother liquor recovery treatment process is improved, so that the fluidized bed is highly matched with the process characteristic of drying undehydrated ferric chloride by using the waste heat of roasting tail gas, and high-temperature tail gas exchanges heat in two directions along the two sides of the spiral heat exchange channel in the drying process; ferric chloride in the heat exchange channel can be fully and uniformly heated, and moisture in the ferric chloride is promoted to be quickly vaporized and lost.

The application discloses polymeric ferric chloride and a production process and application thereof, and preparation of the polymeric ferric chloride comprises the following steps: S1, mixing waste acid with iron oxide scale, adjusting acidity, heating and refluxing, and cooling to obtain a mixture; S2, adding an oxidizing agent and a stabilizer into the mixture, and continuously heating and reacting to obtain the polymeric ferric chloride; the stabilizer is a chitosan-desferrioxamine complex; the polymeric ferric chloride is prepared by using a catalytic oxidation method, the chitosan-desferrioxamine complex stabilizer is used to chelate Fe, the stability of the polymeric ferric chloride is improved, the hydrolysis of Fe is inhibited, and the process is beneficial to improving the total iron content in the polymeric ferric chloride and improving the flocculation effect of the polymeric ferric chloride in sewage treatment.

The invention provides a treatment method of chlorination process titanium dioxide solid waste residues, and belongs to the technical field of resources and environments. According to the method, the chlorination process titanium dioxide solid waste residues are dissolved and extracted step by step, high-value metal in the solid waste residues is recycled respectively, residual substances are evaporated and crystallized to obtain mixed salt, and zero emission and full resource utilization of the solid waste residues are achieved.

The invention provides a method for treating chlorination furnace tail gas in chlorination process titanium dioxide production, which is characterized in that primary filtrate obtained by dissolving dust collection slag generated by a chlorination furnace with water and then filtering is used for selectively absorbing chlorine in the chlorination furnace tail gas, the concentration percentage of Fe < 2 + > in the primary filtrate is 0.5%-12%, the concentration percentage of HCl is 0.1%-10%, and the concentration percentage of Cl is 0.1%-10%. Ferric chloride and chlorine in the primary filtrate react to generate ferric trichloride, chlorine in the tail gas of the chlorination furnace is removed, meanwhile, the primary filtrate is acidic and is prevented from reacting with carbon dioxide contained in the tail gas of the chlorination furnace to generate low-solubility carbonate, the output of waste is reduced, and the production cost is reduced. The problem that low-solubility carbonate generated in the chlorine gas absorption process through traditional alkali washing is separated out in a leaching tower and a pipeline, and consequently the leaching tower and the pipeline are blocked is solved. Meanwhile, the waste liquid is recycled, the treatment cost of the tail gas of the chlorination furnace is reduced, the ferric chloride solution generated after the chlorine gas is absorbed by the primary filtrate can be recycled, and the subsequent environmental protection problem is avoided.

The invention relates to a method for producing iron chloride and aluminum chloride, characterized in that i) sludge ash containing at least one iron compound and aluminum compound is reacted with at least one alkali metal chloride and / or at least one alkaline earth metal chloride at a temperature of 200 to 1100 DEG C in an inert atmosphere, and ii) discharging and separating the formed iron chloride and aluminum chloride in an exhaust stream.

The invention discloses porous ferric fluoride, a preparation method and application of the porous ferric fluoride in a lithium ion battery, and belongs to the technical field of lithium ion batteries. The method comprises the following steps: stirring Lewis alkali and iron-containing Lewis acid under a heating condition to form a clear solution, adding a carbon source into the clear solution, and stirring to form uniform slurry; adding ammonium bifluoride, continuously stirring, alternately washing the obtained precipitate with ethanol and acetone, centrifuging until the supernatant is colorless and transparent, and drying to obtain a precursor; and finally, uniformly grinding the precursor, performing heat treatment, naturally cooling to room temperature, and fully grinding to obtain the porous ferric fluoride. The preparation process is simple and safe, the cost is low, the use of dangerous chemicals hydrofluoric acid and nitrogen fluoride is avoided, and large-scale synthesis can be realized; the prepared ferric fluoride has a porous morphology, is beneficial to electrolyte infiltration, ensures that the electrical contact between active particles is not influenced while the active material is in full contact with the electrolyte, and improves the electrochemical performance.

The invention discloses high-purity electronic-grade ferrous chloride, a preparation method thereof and application of the high-purity electronic-grade ferrous chloride in preparation of iron phosphate. According to the method disclosed by the invention, industrial-grade ferrous chloride tetrahydrate with low cost is taken as a raw material, and high-purity ferrous chloride solid can be obtained by washing without evaporative crystallization in the whole process, so that the production energy consumption is greatly reduced, the production efficiency is improved, and the production cost is reduced; and the obtained high-purity ferrous chloride solid meets the requirements of producing high-quality ferric trichloride and further producing battery-grade iron phosphate.

This invention provides a polyaluminum ferric chloride flocculant. The polyaluminum ferric chloride flocculant is prepared from secondary aluminum ash and coal-fired ash slag. The secondary aluminum ash is calcined and then hydrolyzed and polymerized with an acid extract of oxidized coal-fired ash slag to produce the polyaluminum ferric chloride flocculant. The resulting PAFC flocculant exhibits excellent flocculation properties and is effective in treating a variety of wastewaters, including domestic wastewater, printing and dyeing wastewater, and oily wastewater.

The present application discloses a chlorobenzene wastewater continuous stripping purification and recovery device and an implementation method, comprising an aeration tank, an alkaline water washing system, an acid water washing system, an acid-base neutralization system and a ferric hydroxide separation system. The aeration tank is connected to the alkaline water washing system, the acid water washing system is connected to the alkaline water washing system, the acid-base neutralization system is connected to the alkaline water washing system, the acid water washing system and the ferric hydroxide separation system. The alkaline water washing system and the acid water washing system are both two-stage stripping devices, which have the following advantages: the organic matter content of the alkaline washing water and the acid washing water generated in the chlorobenzene production process is greatly reduced by two-stage nitrogen stripping, ferric hydroxide is generated by neutralization of the acid and alkaline wastewater, and the total amount of wastewater is reduced; then, the ferric hydroxide is reacted with hydrochloric acid in the acid washing water to generate ferric chloride, which not only neutralizes the hydrochloric acid but also consumes the neutralization product ferric hydroxide, thereby reducing the amount of wastewater and realizing the recycling of wastewater resources.

A method of making upgraded synthetic rutile (100) can include binding ilmenite ultrafine particles together with a binder to form green pellets (110). Iron can be reduced in the green pellets by heating the green pellets to a reducing temperature under a reducing atmosphere (120). The ilmenite ultrafine particles within the green pellets can be at least partially sintered together by heating the green pellets at a sintering temperature to form at least partially sintered pellets (130). Iron can be removed from the at least partially sintered pellets by leaching to form upgraded synthetic rutile (140).

The invention discloses a method for preparing an iron salt water purifying agent by using iron-containing waste acid, which comprises the following steps: mixing the iron-containing waste acid with an additional acid solution to obtain an iron salt raw material; then the ferric salt raw material and oxygen are subjected to a continuous flow reaction, and a ferric salt water purifying agent is obtained; the mass fraction of hydrogen ions in the ferric salt raw material in terms of hydrogen chloride is 4.8-8.5%; in the continuous flow reaction, the conveying flow rate of the ferric salt raw material is 500-2000kg / h, and the ratio of the conveying flow rate of the ferric salt raw material to the conveying flow rate of oxygen is 1000: (10-20); the temperature of the continuous flow reaction is 100-165 DEG C, and the pressure of the continuous flow reaction is 1.25-2 MPa. According to the invention, oxygen is taken as an oxidizing agent, the mass fraction of hydrogen ions in the ferric salt raw material is controlled in a specific range, the conveying flow rate of the ferric salt raw material is controlled in a specific range, and the pressure of continuous flow reaction is controlled in a specific range, so that the prepared ferric salt water purifying agent is high in Fe < 3 + > ion content; the content of free acid is low, and the content of insoluble substances is low.

This document provides all-solid-state batteries and their applications. [Solution] The all-solid-state battery is placed on the positive electrode side and has an ionic conductivity of 1 × 10⁻⁶ -4 S / cm~1×10 -2 The first solid electrolyte layer has a density of S / cm, and the negative electrode side has an ionic conductivity of 1 × 10⁻¹⁰. -3 S / cm~2×10 -2 The invention provides for an all-solid-state battery and its applications, which enable the solid electrolyte membrane in the all-solid-state battery to simultaneously satisfy high lithium-ion conductivity, excellent electrochemical oxidation-reduction stability, and excellent compatibility with the positive and negative electrodes, thereby improving the performance of the all-solid-state battery.

The utility model provides a system for producing high-purity ferrous chloride by using desiliconized purified waste acid. The system for producing the high-purity ferrous chloride by using the desiliconized purified waste acid comprises a purification system and a purification system, the purification system comprises a neutralizing tower, a reaction tank, a mixing tank, a settling tank and a purified waste acid tank which are arranged in sequence, and the purification system comprises an evaporator, a centrifugal separator, a stirring and dissolving tank and a ferrous chloride storage tank which are arranged in sequence. An inlet of the evaporator is communicated with an outlet of the purified waste acid tank. The system disclosed by the utility model can be used for regenerating and producing a high-quality iron oxide red product meeting the standard by utilizing waste acid.

The invention discloses iron-based fluoride, a preparation method and application of the iron-based fluoride in a lithium ion battery, and belongs to the technical field of lithium ion battery electrode materials. Iron-based fluoride used for a conversion type positive electrode can be directly synthesized through a simple liquid phase reaction, the electrode material has good electrochemical performance under the room temperature condition, the ultrahigh discharge specific capacity of 656.7 mAh / g under the low current density of 0.1 C is achieved, and the discharge specific capacity of a battery still has 516.99 mAh / g after 100 cycles; the battery still has the specific discharge capacity of 302.28 mAh / g after circulating for 885 circles under the current density of 0.5 C; when the current density is gradually increased from 0.1 C to 5C, the specific discharge capacity still has the capacity of 352.7 mAh / g; the excellent rate capability and cycling stability show the application prospects of different scenes; the preparation method is simple, low in cost and beneficial to batch production.

Provided are new and improved novel processes and continuous ion exchange / continuous ion chromatography (CIX / CIC) systems for the separation of iron and zinc from electric arc furnace baghouse dust.

A device and method for efficient clean utilization of fluor carbon cerium ore double chlorination method, relate to the field of rare earth comprehensive utilization and recovery, the device is composed of a first continuous packing bed, pipeline device; second continuous packing bed; third continuous packing bed; first screw propelling type condenser; second screw propelling type condenser. Rare earth concentrate is chlorinated with aluminum chloride, carbon monoxide and chlorine gas generated in the first and second continuous packing beds in the third continuous packing bed. Chlorinated rare earth, aluminum fluoride and alkaline earth metal chlorides generated by chlorination reaction remain in the chlorination slag in solid form, and titanium tetrachloride, silicon tetrachloride and iron chloride leave the chlorination furnace in gaseous form. The gaseous chlorination products are condensed and recovered by the screw propelling type condenser. The solid phase products are separated by water immersion to obtain single rare earth chloride. The present application realizes the comprehensive utilization of rare earth elements and associated elements such as titanium, fluorine, silicon and iron in fluor carbon cerium ore, and no acid and alkali waste liquid and wastewater are generated in the reaction process, which has good environmental benefits.

i) A step of reacting sewage sludge incineration ash containing at least one iron compound and an aluminum compound with at least one alkali metal chloride and / or at least one alkaline earth metal chloride at a temperature of 200°C to 1100°C in an inert gas atmosphere, and ii) Step of extracting and isolating the iron chloride and aluminum chloride formed in the exhaust gas stream. A process for producing iron chloride and aluminum chloride, characterized by including the following:

The application discloses a preparation method of a FeF3 / FeF3*0.33H2O mixture for sodium electricity, and belongs to the field of sodium ion batteries. The FeF3 / FeF3*0.33H2O mixture is prepared by a room-temperature co-precipitation and low-temperature annealing method, with iron chloride hexahydrate as an iron source, ammonium fluoride as a fluorine source, and anhydrous ethanol and deionized water as solvents. After 4 centrifugal cleanings of the room-temperature precipitate, the mixture is directly subjected to low-temperature treatment at 240 DEG C, and after sintering for 1 h, the mixture is synthesized. The mixture is composed of irregular sheets and particles with different particle sizes. When the mixture is used as a positive electrode material of sodium electricity, the initial specific capacity of the mixture reaches 482.78 mAh / g (0.1 A / g), and after 110 cycles, the specific capacity of the mixture is still 160.83 mAh / g. The FeF3 / FeF3*0.33H2O mixture electrode material prepared by the method has the characteristics of high specific capacity, good cycle performance, short preparation period, safety and the like.

The invention discloses a preparation process and application of ferric trichloride, and relates to the field of inorganic chemistry. In the preparation process of the ferric trichloride, the steel pickling waste liquid is firstly filtered, the pH value is adjusted, then the steel pickling waste liquid reacts with iron powder, then biochemical oxidation is carried out through a fixed bed, in-situ electrochemical chlorine circulation is carried out, and finally concentration, impurity removal and compounding with a stabilizer are carried out, so that the liquid ferric trichloride is prepared. The preparation process of the ferric trichloride has the characteristics of low energy consumption, greenness, high purity and difficulty in devitrification and hydrolysis.

The invention discloses a method and device for preparing ferric oxide from ferric trichloride, and the method comprises the following steps: carrying out sectional heating gasification on a ferric trichloride solid raw material to obtain ferric trichloride gas, and the sectional heating comprises first-section heating (350-400 DEG C), second-section heating (400-500 DEG C) and third-section heating (500-650 DEG C) which are connected in sequence; the ferric trichloride gas and oxygen are subjected to an oxidation reaction, the molar ratio of the ferric trichloride gas to the oxygen is larger than or equal to 4.4: 3, and an iron oxide product and mixed gas are obtained; and condensing and separating the mixed gas to obtain chlorine and ferric trichloride products. According to the method, the technical breakthrough of'preparing high from low 'is achieved through the synergistic effect of'segmented gradient gasification + excess ferric trichloride', the device gasifies ferric trichloride through the segmented heating furnace, gasification of ferric trichloride and impurity separation are effectively controlled, high-purity ferric oxide is prepared, and meanwhile high-purity ferric trichloride and high-purity chlorine are produced as by-products.

The application discloses a method for producing iron oxide red by using electroplating waste acid liquid as raw material and belongs to the technical field of resource recovery. The method comprises the following steps: pretreating iron filings of the electroplating waste acid liquid, evaporating and crystallizing to obtain ferrous chloride powder, removing impurities by using a high-efficiency adsorbent, and preparing iron oxide red by using an air oxidation method. The electroplating waste acid liquid can be effectively utilized, high-yield ferrous chloride raw material can be obtained, high-purity ferrous chloride raw material can be obtained, the content of metal impurities in the ferrous chloride is reduced by using the excellent specific adsorption capacity of the high-efficiency adsorbent, the loss of iron ions is avoided, the whole impurity removal process is safe and pollution-free, the purity of the raw material is ensured from the source, and high-quality iron oxide red can be obtained.

The invention discloses a waste lithium iron phosphate powder recycling method, a cathode material and a cathode piece, and belongs to the technical field of lithium ion batteries, the waste lithium iron phosphate powder is obtained by ball-milling a dried mixed material in inert gas, the mixed material comprises lithium iron phosphate powder, fluorine-containing plastic powder and carbon powder, and the fluorine-containing plastic powder and the carbon powder are subjected to ball-milling in inert gas. The lithium iron phosphate powder is recovered from waste lithium iron phosphate batteries. According to the method, the problems of high energy consumption, large pollution and poor performance of the existing recycling process are solved, the high-temperature heat treatment process required by traditional recycling is completely avoided, a local high-energy region is brought by mechanical energy generated by collision of grinding balls in the ball-milling process, chemical reaction can be induced under normal-temperature and normal-pressure conditions, and regeneration of the waste lithium iron phosphate battery is realized. The raw materials are wide in source and low in price, and energy consumption and cost are remarkably reduced.

The utility model relates to an iron-containing waste hydrochloric acid recovery device which comprises a feeding tank, a feeding pump I, an MF membrane component, an NF storage tank, a feeding pump II, an NF membrane component, a feed liquid circulating tank, a circulating pump, a membrane distiller and a hydrochloric acid condensation and collection component which are sequentially communicated through a conveying pipeline, the stock solution inlet is communicated with an iron-containing waste hydrochloric acid conveying pipeline, the stock solution outlet is communicated with an inlet of the feeding pump I, the concentrated water backflow inlet is communicated with a concentrated water outlet of the MF membrane assembly through a backflow pipeline, a produced water outlet of the MF membrane assembly is communicated with an inlet of the NF storage tank, and a produced water outlet of the NF membrane assembly is communicated with a hydrochloric acid recycling pipeline; a concentrated water outlet of the NF membrane assembly is communicated with an inlet of the feed liquid circulating tank, and an outlet of the feed liquid circulating tank is communicated with an inlet of the circulating pump. The method has the advantages that hydrochloric acid and ferric chloride in the iron-containing waste hydrochloric acid can be effectively separated and respectively recycled, no other agents are introduced or redundant waste is generated, and the operation is stable.

The invention discloses a comprehensive treatment method of chlorination dust collection slag, and relates to the technical field of solid waste purification treatment, and the method comprises the following steps: adding water into solid particles collected in a cyclone collector of a fluidizing chlorination furnace, and stirring to prepare slurry, so as to obtain slurry; conveying the slurry into a settling tank for settling separation to obtain supernate and bottom thick slurry; concentrating, oxidizing and filtering the supernate to obtain a ferric chloride solution; the bottom thick slurry is dried and separated to obtain light component particles and heavy component particles, the light component particles are mainly petroleum coke, the heavy component particles are mainly titanium slag and metal chloride, ore-coke separation and solid-liquid separation of the chlorinated slag are achieved, the solution is comprehensively utilized, and resources are fully utilized; water is saved, and the processing and disposal cost of the chlorinated slag is greatly reduced.

The present invention relates to a method of producing a cathode active material, comprising at least partially dissolving iron fluoride trihydrate (IFH) in a polar solvent, thereby obtaining a solution; adding water to the solution, thereby precipitating a compound comprising pyrochlore iron hydroxy-fluoride hydrate (Pyr-IHFH); separating the precipitated compound from the solution; and heating the separated, precipitated compound to a temperature between 50 and 400 °C, thereby obtaining the cathode active material comprising pyrochlore iron hydroxy-fluoride (Pyr-IHF), wherein adding water to the solution converts IFH to Pyr-IHFH. The invention further relates to a cathode active material comprising Pyr-IHF, a cathode comprising the cathode active material and a battery comprising the cathode.

The invention relates to a process for the recovery of phosphorus and iron compounds from iron phosphate-containing materials, characterized in that i) an iron phosphate-containing material is reacted with chlorine gas in the presence of a carbon source at a temperature of 300 to 900°C and ii) the chlorophosphorus compounds formed, in particular phosphorus oxychloride and optionally phosphorus trichloride and iron chloride, are discharged in the exhaust gas stream, and iii) the iron chloride and iv) the chlorophosphorus compounds are separated from the exhaust gas stream.