29 results about "Mirabilite" patented technology

The invention discloses a spodumene concentrate resourceful treatment method which comprises the following steps: carrying out wet treatment on spodumene acid clinker to prepare lithium-removed filter residues and leachate; carrying out neutralization treatment and desulfurization treatment on the leachate to obtain a lithium-containing purified solution, gypsum and iron oxide red, and carrying out lithium extraction treatment on the lithium-containing purified solution to obtain a lithium salt and mirabilite; the lithium-removed filter residues are treated through a process combining a beneficiation method and a chemical method, and water glass, nano kaolinite, ceramsite aggregate and tantalum-niobium concentrate are obtained. According to the method, whole-process slag-free production of the spodumene concentrate is achieved, and meanwhile the lithium-containing compound with the high purity and the high quality is obtained; and various valuable products can be obtained.

The invention relates to the field of glass products, and particularly discloses a light-weight glass bottle formula and a processing technology thereof. The formula of the light-weight glass bottle comprises 17.3%-19.1% of quartz sand, 4.6%-5.0% of sodium carbonate, 2.9%-3.2% of calcite, 5.0%-5.5% of potassium feldspar, 0.70%-0.85% of a clarifying agent, 0.23%-0.28% of chromium powder, 0.39%-0.47% of mirabilite, 0.009%-0.011% of carbon powder and 63.8%-70.5% of glass particles, wherein the glass particles are particles with the particle size of 5 mm to 20 mm, and the particles are prepared by smashing recycled colorless glass waste and removing impurities. The light-weight glass bottle formula provided by the invention has the advantage of synchronously ensuring the internal pressure strength and the mechanical impact strength of the glass bottle on the premise of realizing the light weight of the glass bottle.

The utility model relates to the technical field of caustic soda production process devices, in particular to a system for producing caustic soda, which comprises a crude salt preparation unit, a primary brine preparation unit, a secondary refined brine preparation unit, an electrolysis unit, an evaporation unit, a brine preparation unit, a chlorine hydrogen treatment unit and a hydrochloric acid synthesis unit, the caustic soda solutions with different mass concentrations are obtained on the same production line, the solid flaky caustic soda is obtained at the same time, and byproducts such as chlorine, hydrogen, hydrochloric acid, sodium hypochlorite and mirabilite with recycling value are obtained; according to the utility model, the salt dissolving water preparation unit is reasonably and orderly communicated with the other units, and materials such as waste water generated by each unit are recycled, so that the purposes of energy conservation and efficiency improvement are achieved.

The invention discloses a method for preparing sodium carbonate from industrial solid waste mirabilite, which comprises the following steps: uniformly mixing mirabilite, slag and a reducing agent according to a certain proportion, adding water, carrying out wet mixing, carrying out compression molding, drying water in a sample, and carrying out reduction reaction in a reduction furnace to obtain a slag-containing sodium sulfide block material; and after crushing, the slag-containing sodium sulfide powder is placed in the atmosphere of carbon dioxide and water vapor to react to obtain slag-containing sodium carbonate which can be directly used for chromium salt production or vanadium extraction process. The method is simple in technological process, high in mirabilite reduction rate, energy-saving and consumption-reducing, free of wastewater and waste residue discharge in the whole production process and capable of meeting the environmental protection requirement.

Provided is a leaching-seepage process of sodium sulfate in a thenardite tailings stack. The process includes the following steps: step 1, providing a mud reserve pit next to the thenardite tailings stack, and ditching a drainage ditch next to a bottom of the thenardite tailings stack; step 2, ditching a leaching pit on the thenardite tailings stack, injecting water, and letting the water stand to leach thenardite tailings; step 3, leaching the thenardite tailings with the water, so that a percolating fluid gradually flows out from the bottom of the thenardite tailings stack; step 4, flushing the bottom of the thenardite tailings stack with a spray gun, to mix the percolating fluid with mud to flow into the drainage ditch; and step 5, settling naturally in the mud reserve pit, and extracting a supernatant from the mud reserve pit by a water pump to obtain refined Glauber's salt water.

The application relates to the field of mirabilite swelling reduction, and specifically discloses a novel mirabilite swelling reduction device, which comprises a protector, a bandage for fixing the protector on a patient, and an air bag arranged on the protector. The protector is provided with a cavity for loading mirabilite on the side close to the patient. A limiting piece is arranged on the inner wall of the cavity to limit the mirabilite. The limiting piece is provided with an embedding part capable of being partially embedded in the mirabilite. The novel mirabilite swelling reduction device can prevent the mispositioning of the mirabilite from affecting the treatment effect during treatment.

This invention discloses a glass bottle formulation comprising the following raw materials: 100-120 parts silica sand, 30-45 parts soda ash, 8-12 parts dolomite, 8-12 parts calcite, 7-9 parts fluorite, 1-1.5 parts mirabilite, 2.5-3.5 parts environmentally friendly glass kiln ash, 3.5-7 parts SiC whisker / mullite whisker / nano TiO₂ composite, 0.8-1.2 parts sodium nitrate, 1-3 parts chromite powder, and 500-600 parts green waste glass slag. The beneficial effects of this invention are: a high proportion of green waste glass slag significantly reduces the consumption of raw materials such as silica sand and soda ash; it achieves the resource utilization of industrial solid waste, reducing solid waste disposal costs and carbon emissions; the sodium sulfate and calcium silicate particles in the environmentally friendly ash synergistically aid melting, reducing melting energy consumption; and the whisker composite, through the synergistic effects of SiC whisker stress dispersion, mullite whisker framework filling, and nano TiO₂ bubble adsorption, improves the impact resistance of beer glass bottles.

The utility model relates to the field of mirabilite preparation, and discloses a mirabilite slurry self-circulation system. The nitrate slurry self-circulation system comprises a mother liquor storage tank, the front end of the mother liquor storage tank is fixedly connected with a feeding pipe, the top end of the feeding pipe is fixedly connected with a circulation pipe, the top end of the circulation pipe is fixedly connected with a circulation pump, the top of the circulation pump is fixedly connected with a feeding pipe, and a heat exchange pipe is installed on the surface of the feeding pipe. An evaporation chamber is fixedly mounted at the top end of the feeding pipe, a nitrate foot is fixedly mounted at the lower end of the evaporation chamber, a jacket sleeves the surface of the nitrate foot, a circulating pipe is fixedly connected to the upper side end of the jacket, a nitrate slurry pipe is fixedly connected to the lower side end of the jacket, and a nitrate slurry pump is fixedly connected to the top end of the nitrate slurry pipe. According to the device, the saltpeter slurry self-circulation process can be improved, and saltpeter slurry circulation requirements of partial regions in response to off-peak production are met; and the conditions that the device is blocked during circulation and the system temperature is too low are avoided.

The invention relates to a mirabilite XRF detection standard working curve construction and component detection method. The method comprises the following steps: preparation of a standard sample, preparation of a standard detection product, drawing of a standard working curve, and detection, analysis and calculation. A sample is pre-melted for 20 minutes at the temperature of 450-500 DEG C before XRF detection, then is melted for 15-25 minutes at the temperature of 900-1050 DEG C, and is naturally cooled. Different from the prior art, according to the technical scheme, the sample is subjected to melting treatment, the mineral effect is eliminated, the particle size effect is overcome, and the measurement error is reduced; the preparation method comprises the following steps: adding lithium nitrate, anhydrous lithium tetraborate and lithium metaborate fluxing agents before melting, pre-melting at 450-500 DEG C for 20 minutes, and enabling the lithium nitrate, the lithium tetraborate and the lithium metaborate to act synergistically to fix the sulfur element in the anhydrous sodium sulfate and prevent the sulfur element from volatilizing, so that the accuracy of a detection result is improved.

The invention discloses European tea colored glass and a coating method thereof, the transmittance T value of 5 mm of the European tea colored glass is 52-53%; the L value is 77-78, and the a value is 4.6-4.8; the value of b is 9.6 to 9.7; the main raw materials comprise 57-65 parts of silica sand, 15-21 parts of sodium carbonate, 13-18 parts of dolomite, 3.0-4.5 parts of limestone, 0.3-0.9 part of mirabilite and 0.3-1 part of an additive; and the coloring agent comprises the following components in percentage by weight: 0.3 to 0.7 percent of Fe2O3, 0 to 0.3 percent of CuO, 0.01 to 0.5 percent of MnO, 0 to 0.2 percent of Co3O4 and 0 to 0.8 percent of Se. According to the invention, a body coloring technology and a functional coating technology are integrated, and a product with a wide market prospect is successfully developed.

The invention relates to a preparation method of salted yellow pinellia fermented mass, which comprises the following steps: adding rhubarb decoction pieces into water, boiling, extracting in a boiling state, and filtering to obtain an extracting solution; mixing the extracting solution with pinellia ternate and mirabilite; fermenting under the conditions that the temperature is 27-33 DEG C and the relative humidity is 75-85%, and taking out and drying when grey white hair or yellow hair is generated, so as to obtain the yellow pinellia fermented leaven. The effective components of the rheum officinale are extracted by adopting a hydrothermal extraction method, so that the component standard of the patent medicine salted yellow pinellia fermented mass is uniform.

The invention relates to the technical field of metal extraction, in particular to a process for extracting rubidium from sedimentary grey green salt lake clay. A technology for extracting rubidium from sedimentary grey green salt lake clay comprises the following steps that the sedimentary grey green salt lake clay is crushed and sieved, then fine particles are soaked in a leaching agent, and leaching liquid containing the rubidium element is obtained through filtering; wherein the leaching agent is prepared from concentrated hydrochloric acid, low-salinity water and mirabilite, the volume fraction of the concentrated hydrochloric acid is 30%-50%, and the liquid-solid ratio of the low-salinity water to the mirabilite is 30 mL: 1 g; the low-salinity water is natural water of the horse-sea basin. According to the method, rubidium is extracted by adopting a low-salinity water, concentrated hydrochloric acid and mirabilite composite leaching agent, rubidium ions are released through acidolysis reaction and ion exchange, the rubidium element is directly extracted from the sedimentary grey green salt lake clay, and an extraction process method and key parameters suitable for the rubidium element in the clay of the type in Mahai region of Qinghai are established.

The present application relates to the technical field of building materials, and particularly relates to a solid waste-based Yellow River sediment gelatinized material and a preparation method of artificial flood-prevention prepared stone. The solid waste-based Yellow River sediment gelatinized material comprises the following raw materials in parts by weight: 300-500 parts of Yellow River sediment, 80-130 parts of cinder ash, 40-80 parts of steel slag, 20-50 parts of alunite tailings, 25-55 parts of mirabilite gypsum, 0.5-1.5 parts of crack self-repairing material, and 1-3 parts of workability regulator. The artificial flood-prevention prepared stone prepared by the method has excellent mechanical properties and erosion resistance, can reduce carbon emissions and improve ecological properties, and makes the Yellow River sediment realize resource utilization.

The invention relates to the technical field of filling materials, in particular to special cementing powder for mine filling and a preparation method thereof. The concrete comprises the following raw material components in parts by weight: 20 parts of ordinary Portland cement, 65 parts of fly ash, 5.0 parts of carbide slag, 4.0 parts of mirabilite, 6.0 parts of an accelerator, 5.0 parts of modified gypsum and 0.4 part of a polycarboxylate superplasticizer. According to the invention, sodium citrate is introduced and a silane coupling agent KH550 is used for carrying out surface modification on the pretreated gypsum in a gypsum pretreatment stage, and experiments prove that in an embodiment 1 subjected to surface activation treatment, the tensile splitting strength in 28 days is up to 2.95 MPa; and in an embodiment 3 in which the surface activation step is omitted, the pressure is only 2.50 MPa. According to the technical scheme, the problem of weak interface bonding of a multi-solid-waste system is successfully solved, and the anti-cracking performance of the material is improved.

The invention provides a membrane separation-induced crystallization-evaporation pond integration-based high-salt mine water resource chemical treatment method, which comprises the following steps: pretreating high-salt mine water, and sequentially carrying out first-stage and second-stage reverse osmosis membrane separation for desalination and concentration; secondary reverse osmosis concentrated water enters a nanofiltration system to realize selective separation of divalent ions; carrying out induced crystallization on the nanofiltration concentrated water to remove calcium ions and recover a calcium sulfate byproduct; after crystallization, effluent is further concentrated through three-stage reverse osmosis, concentrated water finally enters a multi-stage evaporation pond, and mirabilite and sodium chloride are separated out through temperature control grading. Through collaborative integration of multi-stage membrane separation and induced crystallization, efficient desalination, deep concentration and scaling control of high-salt mine well water are achieved, the system water recovery rate is larger than or equal to 90%, meanwhile, synchronous recovery of water resources and multiple salt resources is achieved, and the system has the advantages of being low in treatment cost, small in occupied area, high in recycling degree and free of emission.

The invention relates to a method for purifying and harmlessly treating coal chemical industry waste salt, purified and harmlessly treated sodium sulfate and application of the purified and harmlessly treated sodium sulfate in preparation of alkali from mirabilite. According to the method, the purification and harmlessness of the coal chemical industry waste salt are realized by adding sufficiently excessive sulfuric acid and adopting a step-by-step heating method.

The invention provides a coal gasification ash-based high-density gel filling material as well as a preparation method and application thereof. The material is prepared from the following raw materials in parts by weight: 20-60 parts of coal gasification ash powder, 10-15 parts of coal gangue powder, 20-40 parts of coal gangue aggregate, 2-10 parts of cement, 0.5-3 parts of a surface modifier, 1-5 parts of a sulfate activator and 30-50 parts of water. Wherein 20-60 parts of coal gasification ash powder, 10-15 parts of coal gangue powder, 20-40 parts of coal gangue aggregate and 2-10 parts of cement are mixed to prepare a gelling filling material; the surface modifier is at least one of sodium abietate, sodium polyacrylate and a silane coupling agent; the sulfate exciting agent is formed by mixing mirabilite and gypsum. The mechanical property of the coal gasification ash-based gelling filling material is enhanced, the porosity is reduced, and the curing effect on heavy metal elements such as Pb, Cr and Cd in solid waste is improved.

The invention discloses a method for comprehensively extracting lithium from lepidolite and recovering by-products, and relates to the technical field of comprehensive utilization of lepidolite resources, and the method comprises the following steps: step 1, burdening and conversion roasting; secondly, water leaching and fluorite flotation are conducted; 3, acidizing roasting and secondary leaching, wherein sulfuric acid with the concentration larger than or equal to 98 wt% is added into tailings obtained in the step 2 for acidizing roasting; carrying out secondary leaching on an acidified roasting product by using the filtrate obtained in the step 2; step 4, performing slag-liquid separation and preparing a lithium product; and 5, preparing potassium sulfate and mirabilite. According to the invention, limestone ore blending conversion roasting fluorine fixation is carried out, so that the generation of a large amount of hydrogen fluoride is avoided from the source, fluorine is converted into a high-value product instead of a pollutant through fluorite flotation, lithium precipitation carbon sources are all from primary roasting limestone and fuel gas containing carbon, and final waste residues leached after acidification roasting are used as qualified cement raw materials; and zero emission of solid waste is realized, and the environment-friendly bottleneck of the industry of extracting lithium from lepidolite is thoroughly solved.

The utility model relates to the technical field of bromine extraction and mirabilite preparation equipment, in particular to a concentrated high-nitrate liquid bromine extraction and mirabilite preparation device, which comprises a hot blowing device, a condensing device, a nitrate extraction device, a bromine-water separation device and a bromine storage barrel, the bromine output end of the hot blowing device is connected with the input end of the condensing device; the saltpeter output end of the hot blowing device is connected with the input end of the saltpeter extraction device; a liquid outlet of the condensing device is connected with an input end of the bromine-water separating device; the input end of the bromine storage barrel is connected with the bromine output end of the bromine-water separation device, bromine in concentrated high-nitrate liquid or bromine contained in waste liquid after bromine extraction can be extracted by utilizing a method of the hot blowing device, the utilization rate of brine resources is improved, and after the hot blowing device is combined with the bromine extraction device, the utilization rate of the brine resources is improved. The concentrated bromine-containing high-saltpeter liquid can be used for producing saltpeter, and the production efficiency is improved.

The invention discloses environment-friendly and energy-saving equipment for removing mirabilite in chromium liquid for recycling, and relates to the technical field of chemical tanning and resource recycling, the equipment comprises a cooling mechanism which is erected on the ground and is used for crystallizing mirabilite impurities in concentrated chromium liquid, and the cooling mechanism comprises a storage tank erected on the ground; an inner container is fixedly mounted in the storage tank, and a snakelike tube nest is wound and fixed on the outer side of the inner container; an evaporation mechanism for evaporating and concentrating chromium liquid is arranged at the top of the cooling mechanism; a filtering mechanism for removing mirabilite crystals in the concentrated chromium liquid is arranged at the bottom of the cooling mechanism, and evaporation, cooling crystallization and impurity removal are sequentially performed on the chromium liquid by utilizing the cooling mechanism, the evaporation mechanism and the filtering mechanism. The environment-friendly and energy-saving equipment for removing mirabilite in chromium liquid for recovery has the effects of simple structure, low operation cost, high energy-saving and environment-friendly efficiency and multifunctionality.

The invention relates to the technical field of crushing devices, in particular to a mirabilite ore processing crushing device which comprises a crushing box, a feeding pipe, a transparent glass window and two first motors are fixedly mounted on the crushing box, the driving end of each first motor is fixedly connected with a rotating shaft, each rotating shaft is fixedly connected with a crushing roller, and the crushing roller is fixedly connected with a crushing roller. Inclined plates which are obliquely arranged are fixedly connected to the inner walls of the two sides of the crushing box; an opening is formed in one side of the smashing box, a sieve plate is rotationally connected to the inner wall of one side of the smashing box, a collecting frame is arranged on the lower inner wall of the smashing box, and a raking assembly is arranged on the smashing box and comprises a reciprocating lead screw rotationally installed on the smashing box. The mirabilite ore crushing device is convenient and rapid to operate, high in mirabilite ore crushing efficiency and beneficial to use.

The invention relates to a method for preparing potassium sulfate by taking sintering machine head ash as a raw material and adopting a multi-step washing and mirabilite method, belonging to the technical field of solid waste resource utilization. In order to solve the problems of high water consumption, high energy consumption and excessive hetero ions in the existing recovery of K in the sintering machine head ash, the invention provides a method for preparing potassium sulfate by using the sintering machine head ash as a raw material and adopting a multi-step water washing and mirabilite method, and a two-step double decomposition method is creatively adopted to extract potassium salt from the machine head ash. KCl obtained in a multi-step water washing method is converted into K2SO4, obtained salt is high in yield and purity, environmental protection and economical efficiency are improved, efficient water saving is achieved, and the extraction efficiency and concentration of soluble salt are improved; intelligent and accurate impurity removal is adopted, and impurity recovery and crop friendliness are both considered. A low-energy-consumption and high-yield sylvite extraction and separation process is adopted, and a scientific auxiliary means is adopted to ensure the stability of the process.

The present application relates to the field of geopolymer materials, and particularly relates to a preparation method of a freeze-thaw resistant volcanic ash-based geopolymer synthesized by composite waste alkali activation. The geopolymer is a freeze-thaw resistant geopolymer based on volcanic ash and blast furnace slag synthesized by a triple composite alkali activator of carbide slag-mirabilite-sodium silicate, and has the characteristics of high compressive strength and good freeze-thaw durability. The present application uses an environmentally friendly material preparation method, fully utilizes the value of solid waste, and can reduce the production cost of the geopolymer. The triple composite alkali activator of carbide slag-mirabilite-sodium silicate improves the matrix density of the geopolymer, thereby improving the freeze-thaw durability. The triple composite waste alkali system has good alkali activation performance, can accelerate the geopolymerization process, and thus obtain a dense gel matrix. The geopolymer can replace ordinary Portland cement, can improve the service life of buildings in cold environments, and has good application prospects.

The invention discloses a novel photovoltaic glass formula and a production process thereof, and belongs to the technical field of photovoltaic glass, the formula innovatively introduces spodumene tailings as a part of raw materials, and the spodumene tailings comprise quartz sand, soda ash, aluminum hydroxide, limestone, dolomite, mirabilite, sodium pyroantimonate and a specific proportion of spodumene tailings. The core of the production process is that an electric field assisted smelting technology is adopted, and a direct-current electric field is applied in the melting process, so that the melting, clarifying and homogenizing processes of the glass are completed at a relatively low temperature. According to the technical scheme, the dependence on high-purity quartz sand is effectively reduced, the raw material cost is reduced by utilizing industrial solid waste, and the production energy consumption is reduced by optimizing the melting process. The prepared photovoltaic glass has excellent performances of low density, high transmittance, good thermal stability and the like.

The invention discloses a glass bottle formula which comprises the following raw materials: 100 to 120 parts of silica sand, 30 to 45 parts of sodium carbonate, 8 to 12 parts of dolomite, 8 to 12 parts of calcite, 7 to 9 parts of fluorite, 1 to 1.5 parts of mirabilite, 2.5 to 3.5 parts of glass kiln environment-friendly ash, 3.5 to 7 parts of SiC whisker / mullite whisker / nano TiO compound, 0.8 to 1.2 parts of sodium nitrate, 1 to 3 parts of chromium ore powder and 500 to 600 parts of green waste glass slag. The method has the beneficial effects that the addition amount of the green waste glass slag is high, and consumption of raw materials such as silica sand and sodium carbonate is greatly reduced; industrial solid waste recycling is achieved, the solid waste treatment cost and carbon emission are reduced, sodium sulfate and silicon-calcium particles in the environment-friendly ash cooperate for fluxing, and the melting energy consumption is reduced. According to the whisker compound, the impact strength of the beer glass bottle is improved through the synergistic effect of stress dispersion of SiC whiskers, framework filling of mullite whiskers and adsorption of nano TiObubbles.

The invention relates to environment-friendly and energy-saving recycling mirabilite removal equipment in chromium liquid, which comprises an enamel tank, a feeding hole is formed in the upper end of the enamel tank, a material external connecting pipe is arranged in the feeding hole, and a driving mechanism is arranged in the enamel tank; the method is particularly suitable for being used and has a relatively high commercial prospect; according to the chromium liquid recovery device, existing chromium liquid recovery equipment is improved and modified, in the mirabilite removal process, the material external connection pipe can be unblocked, mirabilite crystals are prevented from being deposited at a discharging port of the material external connection pipe, and therefore the situation that the material external connection pipe is blocked is avoided, and the service life of the material external connection pipe is prolonged. Therefore, the equipment does not need to be unblocked and cleaned, so that the production efficiency is effectively improved.

This invention addresses the waste generated during sodium bicarbonate flue gas desulfurization, which includes Na2SO4, Na2CO3, and impurities. It provides a method and system for the combined production of sodium sulfate and caustic soda from this waste. Specifically, the process involves cooling and crystallizing the solution obtained after dissolving and filtering the waste using a heat pump system at different temperatures to extract sodium sulfate and caustic soda. This process more effectively treats the waste generated during sodium bicarbonate flue gas desulfurization. The resulting sodium sulfate and caustic soda can be recycled, improving economic efficiency and reducing processing costs. Furthermore, in terms of environmental benefits, it solves the pollution problem caused by landfilling desulfurization waste, avoiding the threat to residents' health from water, soil, and air pollution around landfills.

The present application relates to the technical field of geopolymer preparation, and discloses a mixed powder composition for preparing geopolymer cementing material, a preparation method and application thereof. The method comprises the following steps: (1) mixing, grinding and modifying coal gasification furnace slag, desulfurization gypsum and mirabilite to obtain modified coal gasification furnace slag; (2) mixing the modified coal gasification furnace slag with fly ash; (3) mixing solid water glass with red mud to obtain a composite activator; and (4) mixing the composite activator with the mixture obtained in step (2). The method has the characteristics of small amount of activator, low curing temperature and high production efficiency, and the mixed powder composition for preparing geopolymer cementing material prepared by the method is solid, which is convenient for storage and transportation. When used, the mixed powder composition is directly mixed with water to obtain geopolymer cementing material with excellent early strength, condensation efficiency, strength stability and durability.

The invention provides a process method for preparing sulfur from mirabilite, and relates to the technical field of sulfur production and carbon emission reduction, and the process method comprises the following steps: with C or CO as a fuel, preheating mirabilite, adding the preheated mirabilite into a three-blade closed reduction rotary kiln, and calcining at 900-1050 DEG C to obtain liquid Na2S; enabling the liquid or solid Na2S calcined in the step S1 and solid CaCO3 to enter a multi-phase reactor for reaction; performing solid-liquid separation on the slurry after the reaction in the step S2, wherein the filter residue is CaS and the filtrate is a Na2CO3 solution; the gas phase obtained after calcination in the step S1 enters a CO2 trapping system, and then flue gas is discharged after being subjected to desulfurization, denitrification and dust removal; the filter residues obtained in the step S3 and the CO2 captured in the step S4 are fed into a supergravity carbonization reactor, the obtained solid phase is CaCO3, and the obtained gas phase is H2S; the solid-phase CaCO3 is returned to the multi-phase reactor of S2 for recycling; h2S enters a Claus reaction system, and finally a sulfur product is obtained. According to the method, sulfur in the low-quality mirabilite is converted into sulfur; in the production process, CaCO3 can be recycled only through one-time feeding, and resources are saved.