37 results about "Sulfate minerals" patented technology

A treating material for treating a polluted water containing, as a hazardous substance, arsenic, lead, cadmium, antimony, uranium, phosphorus, fluorine or the like, which comprises an oxygen-containing iron compound carried on a material containing a silicic acid based fiber or a silicate based fiber; a method for producing the treating material which comprises contacting and reacting a silicate based fiber, such as rock wool, with an iron-containing acidic water; and a method for treating the polluted water witch comprises contacting the treating material with the polluted water. The treating material has a fine structure wherein the above oxygen-containing iron compound is attached in a sheath form on the surface of a fiber reduced in an alkali component and increased in a silicic acid component as compared to, for example, rock wool. The oxygen-containing iron compounds include schwertmannite, ferrihydrite, akaganeite, amorphous hydrous iron oxide and fired ferric sulfate.

The invention provides a high-valued comprehensive utilization method of lithium slag, in particular to mineral waste residues obtained by lithium extraction of spodumene by a sulfuric acid method. The high-valued comprehensive utilization method comprises the following steps: firstly, carrying out size mixing and stirring on the lithium slag and enabling sulfate mineral in the lithium slag to bein a dispersed suspension state; secondly, carrying out desulfurizing treatment on a product obtained in the first step by using a physical ore dressing mode to obtain desulfurized slurry and tailingdiscarding produced slag and enabling the sulfur content of slag phase in the desulfurized slurry to be smaller than or equal to 0.5 percent; thirdly, under the condition that the magnetic field strength is 0.5 to 2.0T, carrying out magnetic separation on the desulfurized slurry obtained in the second step to obtain magnetic separation slurry and magnetic separation tailings and reducing the content of ferric oxide in the magnetic separation slurry to be smaller than or equal to 0.05 percent; then concentrating, filtering and drying the obtained magnetic separation slurry to obtain a pyrophyllite raw material for glass fibers. The treatment method of the lithium slag, disclosed by the invention, has the advantages of greenness and environmental protection, obvious economic benefits and capability of realizing the leap of high-valued recycling of the lithium slag.

The invention provides a full-phase high-valued recycling method for lithium slag. The lithium slag is ore slag obtained after spodumene is subjected to the lithium leaching procedure for lithium extraction through a sulfuric acid method. The full-phase high-valued recycling method for the lithium slag includes the following steps that firstly, the lithium slag is subjected to size mixing and stirring, and sulfate minerals in the lithium slag are made to be in a dispersed and suspended state; secondly, matter obtained in the first step is subjected to reaction treatment and wet type magnetic separation treatment in any sequence through soluble carbonate; and thirdly, slurry obtained after treatment in the second step is concentrated, filtered and dried, pyrophyllite raw materials for glassfibers are obtained. When the full-phase high-valued recycling method for the lithium slag is used for treating the lithium slag, efficiency is high, generation of three wastes is avoided, spanning of high-valued recycling of the lithium slag is achieved, and remarkable economic benefits and environmental protection benefits are achieved.

The present invention is one method of preparing potassium sulfate with sulfate type lake bittern resource. The preparation process includes the following steps: shining bittern to obtain mixed sulfate mineral with sodium chloride, schoenite, magnesium sulfate and potassium chloride as main components and mixed potassium salt mineral with sodium chloride, potassium chloride, magnesium sulfate and carnallite as main components; mixing these two kinds of mineral and converting with water at normal temperature to obtain coarse mixed schoenite mineral; floating the mixed schoenite mineral to obtain concentrated mixed schoenite mineral; adding water to the high-grade concentrated mixed schoenite mineral and decomposing directly to obtain potassium sulfate product; water washing the tailing to obtain industrial salt. The technological process is power saving and low in cost, and has other advantages.

The invention discloses a process for co-producing lithium carbonate and potassium salt with lithium-containing nanofiltration water. The process comprises the following steps: (1) separating magnesium sulfate subtype salt lake brine with a nano-filtering film to obtain the lithium-containing nanofiltration water; (2) distilling the lithium-containing nanofiltration water to obtain the finished product brine; (3) adsorbing and purifying the finished product brine with strong alkali anion exchange resin to obtain purified brine; (4) distilling the purified brine to obtain a sodium chloride refined salt and a salt-potassium co-saturated brine; (5) cooling and crystalizing the salt-potassium co-saturated brine to obtain industrial potassium chloride and lithium-enriched brine; (6) adding a carbonate solution into the lithium-enriched brine, precipitating and crystalizing at the temperature of 80 to 100 DEG C to obtain the finished product industrial lithium carbonate. By adopting the process, the magnesium sulfate subtype salt lake brine is adjusted, the salt field process is simplified, the crystallization and precipitation of mineral sulfate are avoided; the potassium salt machiningprocess is improved, lithium carbonate and potassium salt coproduction can be realized by further adsorption and purification.

The invention relates to a production method of cement clinker. The production method is characterized by comprising the steps that yellow phosphorus slag and/or alkaline slag and limestone, shale and sandy loess are mixed, and ground into raw material by a raw material preparation system. The production method of the cement clinker comprises the following steps of recycling the yellow phosphorus slag and/or the alkaline slag, quickly reacting sulfur and alkaline compounds enriched by a rotary kiln system and a preheater system, and balancing the sulfur and alkaline ratio, so that the SO2 (sulfur dioxide) gas is effectively cured, the refractory sulfate mineral is generated, the standard discharge is realized, the solid-phase reaction degree in the rotary kiln is improved, the particle forming of the clinker in calcining is denser, and the quality of the clinker is more stable. The production method of the cement clinker has the advantages that by compounding the industrial solid wastes to prepare the raw material, the high-investment equipment is not used, the standard discharge is realized, the burnability of the cement raw material is improved, and the energy consumption of the clinker is decreased; the yellow phosphorus slag and the alkaline slag are industrial waste slag, the pollution by industrial waste slag is eliminated by the desulfurizing of the waste slag in the cement kiln, and the effect of changing wastes into valuables is realized.

The invention discloses a method for treating stainless steel pickling wastewater and synchronously synthesizing secondary iron minerals, which belongs to the field of sewage treatment. The specific process is chemical mineralization combined with alkali neutralization treatment and comprises the following detailed treatment steps of firstly, pretreating the pickling wastewater, adding an oxidizing agent into the pretreated liquid phase for chemical mineralization treatment, collecting the generated secondary iron mineral precipitate, then carrying out alkali neutralization treatment on the solution part, and increasing the pH value to be neutral. According to the technology, efficient treatment of the stainless steel pickling wastewater can be achieved, the alkali consumption can be remarkably reduced through the technology, the amount of generated toxic neutralization sediment is reduced, meanwhile, hydroxyl ferric sulfate minerals with excellent adsorption performance are recycled, and the technology is an economical and efficient technology for treating the stainless steel pickling wastewater.

The invention discloses a crushing and grinding integrated device used for producing the ferrous sulfate mineral substance and relates to the technical field of crushing and grinding devices. The crushing and grinding integrated device comprises a housing, wherein a crushing device is fixedly connected to one side of the upper end of the inside of the housing, a crushing screen is fixedly connected to the lower end of the crushing device, one end of the crushing screen is fixedly connected with one end of a recycle conveyor belt, a filter device is fixedly connected to the middle of one side of the housing, a ball-milling device is fixedly connected to the other side of the middle of the inside of the housing, a grinding screen is fixedly connected to the lower end of the ball-milling device, a button is fixedly connected to the upper end of one side of the filter device, the middle of one side of the button is fixedly connected with one end of a pressing column, the other end of the pressing column is movably connected with the top end of a pressing handle by a hinge pin, the bottom end of the pressing handle is fixedly connected with one end of an arc-shaped rod, and a triangularbump is fixedly connected to the other end of the arc-shaped rod. According to the crushing and grinding integrated device used for producing the ferrous sulfate mineral substance, the defect that the dedusting is not thorough when a spraying device is used can be avoided, and the dedusting capacity can be effectively enhanced.

The invention relates to a beneficiation method for fine utilization of high-sulfide type shallow copper ore and tailings thereof. The beneficiation method comprises the following steps of analyzing chemical components, mineral composition, dissemination granularity and granularity composition characteristics of the high-sulfide type shallow low-grade copper ore; and adopting a technical route of stage grinding separation, separation of copper-sulfur minerals and complex sulfate minerals, multilayer grading of gangue minerals, superfine grinding and wastewater full-flow recycling, and a product route of copper concentrate, sulfur concentrate, alunite concentrate, coarse sand, fine sand and micro powder. The beneficiation method has the advantages that copper and sulfur elements can be completely recycled, no tailings are generated, zero wastewater discharge is realized, gangue minerals are comprehensively utilized according to different chemical components and particle size characteristics, the problem of tailing stockpiling is solved from the source, and huge economic benefits are created; and the method is suitable for copper tailing treatment and application.

The invention discloses a soil pollution prevention treatment device for industrial production of a ferrous sulfate mineral substance and relates to the technical field of soil pollution prevention. The device comprises a treatment device body, wherein the treatment device body comprises a liquid inlet, a recovery tank, a neutralization tank, a filtration tank, a sediment tank, a dilution tank anda liquid discharge pipe; one end of the liquid inlet is fixedly connected with the upper side of one end of the recovery tank; the lower side of the other end of the recovery tank is fixedly connected with the lower side of one end of the neutralization tank. According to the soil pollution prevention treatment device for the industrial production of the ferrous sulfate mineral substance, on onehand, the recovery tank can recycle waste liquid for treatment; on the other hand, a collecting tank can be dismounted to facilitate recovery of a separated substance in the waste liquid; a neutralization chamber can neutralize the waste liquid to reduce the pollution of the waste liquid after discharge to soil; in addition, the dilution tank can dilute the treated waste liquid before the discharge to prevent the soil pollution.