3186 results about "Sulphate salt" patented technology

The invention provides a self-leveling rapid repair mortar based on a steel slag solid waste cementing material and a preparation method thereof, the self-leveling rapid repair mortar comprises the following components in parts by mass: 100 parts of a self-leveling rapid repair mortar cementing material: 20-32 parts of steel slag powder, 20-30 parts of slag powder, 10-23 parts of raw ash, 10-15 parts of desulfurized gypsum, 5-8 parts of silica fume, and 8-25 parts of rapid hardening sulphoaluminate cement; the fine aggregate comprises 50 parts of quartz sand and 50 parts of steel slag aggregate; 0.3 to 0.7 part of a polyether defoaming agent, 0.05 to 0.25 part of lithium carbonate and 6 to 12 parts of a polycarboxylic acid water reducing agent; and 25-28 parts of water. According to the self-leveling rapid repair mortar based on the steel slag solid waste cementing material, on the basis of an alkali excitation synergistic sulfate excitation mechanism, the solid waste materials such as the steel slag powder, the slag powder, the raw ash and the desulfurized gypsum are utilized, and through proportioning optimization, the self-leveling rapid repair mortar which can open traffic within 2 hours and has the compressive strength gt within 28 days is prepared; the bonding strength is gt; the self-leveling mortar for rapidly repairing the cement concrete pavement has the advantages of self-leveling, no shrinkage of later strength and excellent durability.

The invention discloses a sulfur-manganese composite autotrophic denitrification filler as well as a preparation method and application thereof, and belongs to the technical field of environmental functional materials and polluted water treatment. The sulfur-manganese composite autotrophic denitrification filler contains manganese salt, a sulfur-based component and a cement-based component, the manganese salt comprises one or more of manganese carbonate, calcium manganese ore and rhodochrosite; the sulfur-based component comprises sulfur and sulfur manganese ore; the cement-based component comprises cement, fly ash pottery sand, silica fume, blast furnace slag and metakaolin; the cement comprises one or more of Portland cement, iron aluminate cement and sulphoaluminate cement. The nitrogen removal efficiency of the sulfur-manganese composite autotrophic denitrification filler is superior to that of a sulfur autotrophic denitrification system, the sulfate concentration and nitrite nitrogen accumulation in effluent are remarkably reduced, the service life of the filler is prolonged, and the efficient utilization rate of the material is improved.

The invention discloses a cobalt-loaded covalent organic framework material as well as a preparation method and application thereof, and belongs to the technical field of catalyst preparation. The cobalt-loaded covalent organic framework material is prepared by taking a carbonized covalent organic framework as a matrix and cobalt nitrate hexahydrate as a cobalt source, reducing by using a sodium borohydride methanol solution, and introducing transition metal cobalt into the framework through room-temperature impregnation and thermal reduction processes. In the material, active components comprise Co0 and Co < 2 + > which are uniformly distributed on a carrier. Moreover, the metal cobalt is stably loaded in a carbon skeleton through the bonding effect of heteroatoms such as nitrogen and carbon, so that the stability, the catalytic activity and the durability of the metal cobalt are effectively improved, the dissolution risk of the metal cobalt is reduced, the hidden danger of environmental pollution is reduced, and efficient catalytic activity is shown in the aspect of catalyzing and activating peroxymonosulfate to degrade organic pollutants; and good recycling stability is achieved.

The present invention relates methods for treating thyroid cancer, renal cell carcinoma or hepatocellar carcinoma comprising orally administering to a patient in need of such therapy a therapeutic amount of cabozantinib lauryl sulfate salt, preferably in a capsule form. The method allows the administration of the therapeutic amount of cabozantinib lauryl sulfate salt in a fed state or a fasted state and the administration does not exhibit a food effect.

The invention discloses a carbon-coated sodium ferrous sulfate phosphate positive electrode material as well as a preparation method and application thereof. The carbon-coated sodium ferrous sulfate phosphate positive electrode material is square flaky particles formed by coating sodium ferrous sulfate phosphate with a conductive carbon material and irregular aggregates of the square flaky particles. The molecular formula of the sodium ferrous sulfate phosphate is Na (6-2x + y) Fex( SO4) (3-y) (PO4) y, x is more than 0 and less than 3, and y is more than 0 and less than or equal to 0.5. The invention also discloses a preparation method and application of the carbon-coated sodium ferrous sulfate phosphate positive electrode material. The positive electrode material has the advantages of phosphate and sulfate positive electrode materials, the voltage platform is high, the conductivity is excellent, the air stability is good, and the assembled battery has excellent chemical sodium storage performance, high discharge specific capacity, highly reversible charge-discharge reaction and good cycle performance. The method is simple in process, high in feasibility, low in raw material cost and easy to realize industrial production through a solution system.

The invention provides a power transmission and transformation project reinforced concrete corrosivity evaluation method and system, and relates to the technical field of civil engineering durability evaluation.The method comprises the steps that temperature data of a project location and the total volume, the water content and the pore volume of reinforced concrete are collected, and a freeze-thaw failure index formula is constructed; the product type is judged according to the measured sulfate concentration, different sulfate erosion index formulas are constructed in combination with related data, and the magnesium ion concentration is independently considered in the marine environment; constructing a chlorine salt erosion index formula according to the chloride ion concentration; extracting data from the research report to construct a carbonization erosion index formula; and giving a weight to each erosion type to establish a comprehensive corrosivity evaluation index formula, and judging the erosion degree according to a result. By means of the method, various erosion factors can be comprehensively considered, the erosion degree can be effectively judged according to the evaluation result, and a key basis and scientific guidance are provided for durability guarantee, protective measure making and maintenance decision making of the reinforced concrete structure of the power transmission and transformation project.

The invention relates to the technical field of carbon monoxide oxidation catalysts, and discloses a sulfur-tolerant noble metal-based CO oxidation catalyst as well as a preparation method and application thereof. The preparation method of the catalyst comprises the following steps: dipping a carrier in an aqueous solution containing a noble metal precursor and an auxiliary agent precursor, and then drying and roasting to obtain a catalyst matrix; carrying out pre-reduction treatment on the catalyst matrix in a hydrogen-containing atmosphere to obtain a catalyst intermediate; carrying out induced activation on the catalyst intermediate in an atmosphere containing CO and H2S; wherein the carrier is at least one of titanium dioxide, cerium dioxide, aluminum oxide and zirconium dioxide, and the metal element in the auxiliary agent precursor is at least one of Fe, Co and Ni. The catalyst prepared by the method provided by the invention can realize the high-selectivity oxidation process of H2S species, inhibits the adsorption of S species and the formation process of sulfate, and realizes the high-conversion-rate oxidation reaction of carbon monoxide in the presence of H2S.

An animal litter, process for preparing the animal litter, and a method for removal of animal waste using the animal litter are provided. The animal litter generally includes at least one sorbent and a sulfate such as sodium bisulfate. The animal litter is in the form of discrete plural particles which tend to agglomerate when wetted.

The invention provides a concrete admixture with sulfate corrosion resistance and rust resistance functions. The concrete admixture is prepared from the following raw materials in parts by weight: 50-65 parts of fly ash, 8-12 parts of barium carbonate, 8-12 parts of barium hydroxide, 8-12 parts of mineral powder, 5-8 parts of modified hydrotalcite or hydrotalcite, 1-3 parts of nano silicon dioxide and 1-3 parts of calcium nitrite. Nano silicon dioxide is adopted as a compact component, the porosity of the material is reduced, the compactness of concrete is improved, sulfate in the environment is inhibited from being transmitted into the concrete, meanwhile, hydrotalcite is modified by polymaleic acid serving as a scale inhibition component, and the scale inhibition effect is improved through the dual effects of high adsorbability and slow release of the scale inhibition component of hydrotalcite. The preparation method has the advantages that generation of ettringite and gypsum in a sulfate radical environment is inhibited, calcium nitrite is added as a corrosion-inhibiting component, a protective film is formed on the surface of a reinforcing steel bar, the corrosion phenomenon of the reinforcing steel bar in a concrete structure is inhibited, and finally, the concrete admixture with sulfate corrosion resistance and corrosion-inhibiting functions is formed through compounding.

The invention discloses a solid waste-based cementitious material, which comprises the following raw materials based on 100% of the total mass percentage: 10% to 35% of pretreated pyrite tailing powder, 30% to 50% of granulated blast furnace slag powder, 15% to 30% of steel slag powder, and the remainder being gypsum powder. The invention heats the pyrite tailing at 300°C and ultrafinely grinds the pyrite tailing to cause an oxidation reaction of pyrite and pyrrhotite contained therein to generate sulfate minerals, thereby reducing the proportion of sulfide compounds in the tailing and reducing the risk of expansion and cracking of a hardened body of the solid waste-based cementitious material in the later stage. Moreover, the sulfate generated by oxidation and the gypsum contained in the pyrite tailing react with the steel slag and slag in the solid waste-based cementitious material to generate hydrated calcium silicate gel and calcium sulfonite, thereby improving the strength of the solid waste-based cementitious material.

An animal litter, process for preparing the animal litter, and a method for removal of animal waste using the animal litter are provided. The animal litter generally includes at least one sorbent and a sulfate such as sodium bisulfate. The animal litter is in the form of discrete plural particles which tend to agglomerate when wetted.

A low-carbon near zero emission process of industrial waste water, comprising: S1: entering industrial waste water into a pre-oxidation system to improve biodegradability of organics; S2: after treatment in the pre-oxidation unit, entering the waste water into an anaerobic biological treatment system, sodium chloride and sulfate is deeply removed and carbon sources in the waste water can be used to remove the sulfate and nitrate; S3: entering water output from the anaerobic biological treatment system into a membrane concentration system and membrane concentrated solution enters a nano-filtration salt fractionation system for salt fractionation; and S4: refluxing nano-filtration concentrate solution generated by the nano-filtration salt fractionation system to the anaerobic biologic treatment system for biological desulfurization, or synthesizing the nano-filtration concentrate solution to be sodium persulfate by electro chemical methods, and refluxing proportionately to a waste water pre-oxidation system for use in-situ.

The invention relates to acid-resistant sulfate reducing bacteria and application thereof, and belongs to the technical field of microorganisms. The acid-resistant sulfate reducing bacterium disclosed by the invention is Desulfovibrio desulfuricans QY411, and is preserved in the Guangdong Microbial Culture Collection Center on March 14, 2024, and the preservation number of the acid-resistant sulfate reducing bacterium is GDMCC No: 64412. The acid-resistant sulfate reducing bacterium provided by the invention can survive in an environment with the pH value of 4, and can be applied to ecological reconstruction of acid tailings and waste dump soil, the pH values of mining wasteland soil and surface water after ecological reconstruction are remarkably increased, the concentration of SO4 < 2-> in the soil is remarkably reduced, the acidification process in the mining wasteland soil is effectively inhibited, and the acid-resistant sulfate reducing bacterium has the advantages of being safe and reliable. Therefore, the acidification process in the mining wasteland is effectively controlled. Meanwhile, soil heavy metal pollution is reduced, and vegetation growth is recovered.

The invention provides a method for preparing a lithium slag-based molecular sieve by melting lithium slag with assistance of eutectic salt, and relates to the technical field of molecular sieves. The method comprises the following steps: carrying out acid pickling pretreatment on a lithium slag raw material to obtain pretreated lithium slag; co-grinding and uniformly mixing the pretreated lithium slag and eutectic salt, and reacting at 200-350 DEG C for 2-6 hours to obtain eutectic lithium slag; carrying out aging treatment and crystallization treatment on the eutectic lithium slag, carrying out solid-liquid separation, washing the solid to be neutral, and drying to obtain a lithium slag-based molecular sieve; wherein the eutectic salt comprises an alkali solvent and an auxiliary salt, the alkali solvent is sodium hydroxide, and the auxiliary salt is at least one of chlorine salt, villiaumite, carbonate, sulfate and nitrate; the molar ratio of the alkali flux to the auxiliary salt is (4-19): 1. According to the method, the eutectic salt system is introduced in the lithium slag alkali fusion stage, meanwhile, the molar ratio of the alkali flux to the auxiliary salt in the eutectic salt is controlled to be (4-19): 1, the alkali fusion reaction temperature is reduced, the reaction of the lithium slag and alkali is promoted, the molecular sieve yield is increased, the product morphology can be regulated and controlled, and a specific molecular sieve can be formed in a guiding mode.

The invention discloses a method for degrading dioxin in fly ash and stabilizing heavy metals, which comprises the following steps: carrying out water washing treatment on the fly ash, and carrying out solid-liquid separation to obtain water washing slag; mixing the washed slag with water, adding zero-valent iron and sulfite, carrying out hydrothermal treatment, and carrying out solid-liquid separation to obtain hydrothermal slag and hydrothermal liquid; according to the method for degradation of dioxin in fly ash and stabilization of heavy metal in cooperation with degradation of dioxin in fly ash, under the combined action of zero-valent iron, chlorite and a hydrothermal environment, efficient degradation of dioxin in fly ash can be rapidly achieved under the lower reaction condition, stabilization of heavy metal in fly ash can be synchronously achieved, and the method is suitable for industrial production. The method has the advantages of being low in cost, mild in reaction condition, high in treatment efficiency, good in treatment effect, environmentally friendly and the like, can effectively solve the problems existing in the prior art, provides powerful support for harmless treatment and resource utilization of the waste incineration fly ash, and has wide engineering application prospects.

The invention belongs to the technical field of environment-friendly materials, and particularly relates to an MIL-88A-WS2 composite material and a preparation method and application thereof. The preparation method comprises the following steps: mixing WS2 taking a 1T phase as a main phase and MIL-88A in a solvent, then carrying out a hydrothermal reaction, in the hydrothermal reaction process, loading the WS2 taking the 1T phase as the main phase on the MIL-88A, forming a Fe < 2 + > / Fe < 3 + > and W < 4 + > / W < 6 + > circulating channel, covalent bonds and ionic bonds between the WS2 taking the 1T phase as the main phase and the MIL-88A, and meanwhile, forming a hollow structure by the MIL-88A, so as to obtain the MIL-88A-WS2 composite material. The MIL-88A-WS2 composite material obtained by the method provided by the invention has many active sites and strong conductivity, and can act together with an oxidizing agent peroxymonosulfate to realize degradation of phenolic pollutants.

The invention discloses silver powder with a high twin crystal ratio and a preparation method and application of the silver powder with the high twin crystal ratio. The preparation method comprises the following steps that S1, a carboxylic acid coordination agent is added into a silver source solution, and a silver precursor solution is obtained; sequentially adding a dispersing agent and an initiator into the reducing agent solution to obtain a reaction base solution; s2, a silver precursor solution is added into the reaction base solution for an oxidation-reduction reaction, then curing is conducted, and mixed mother liquor is obtained; s3, the mixed mother liquor is filtered, washed, dispersed and dried, and then the silver powder with the high twin crystal proportion is obtained; the initiator comprises one or more of sulfate, carbonate and nitrate; through the synergistic effect of the initiator and the carboxylic acid coordination agent, the silver ion release rate and the crystal nucleus preferential growth direction are regulated and controlled, the rapid feeding and curing technology is combined, the low supersaturation environment is constructed, the silver powder is induced to grow in the specific direction, and the twin crystal proportion is remarkably increased.

The invention provides a superfine light-weight high-strength filler and a preparation method thereof, and belongs to the technical field of fillers. The filler is prepared from the following components in parts by weight: 30 to 100 parts of quartz sand, 1 to 10 parts of cullet, 1 to 15 parts of Al2O3, 7 to 15 parts of Li2O, 2 to 8 parts of P2O5, 1 to 12 parts of ZrO2, 3 to 6 parts of composite nucleating agent, 5 to 10 parts of carbonate, 10 to 20 parts of feldspar and 2 to 5 parts of sulfate. The preparation method comprises the following steps: mixing the quartz sand, the cullet, the Al2O3, the Li2O, the P2O5, the ZrO2 and the composite nucleating agent, melting at a high temperature to obtain a base material, nucleating and crystallizing at different temperatures, grinding, adding the carbonate, the feldspar and the sulfate, adding the binder, granulating, and sintering to obtain the product. The lightweight high-strength filler has the characteristics of sound absorption, noise reduction, fire prevention, flame retardance, light mass density, high compressive strength, low water absorption, ecological environmental protection and the like, and is suitable for lime, gypsum and cement-based products; particularly, the high-temperature-resistant and high-strength dry-mixed mortar has a good application prospect in dry-mixed mortar products, such as ceramic tile adhesives, light plastering and self-leveling, as well as acoustic boards, sound insulation barriers, heat insulation boards and fireproof board products.

An animal litter, process for preparing the animal litter, and a method for removal of animal waste using the animal litter are provided. The animal litter generally includes at least one sorbent and a sulfate such as sodium bisulfate. The animal litter is in the form of discrete plural particles which tend to agglomerate when wetted.

To provide a water-soluble chelating polymer that can rapidly trap a trace amount of heavy-metal ions to reduce the amount of heavy-metal ions to a ppm level or lower in a short time.Use a water-soluble chelating polymer comprising an anionic polymer having a carboxy group, a sulfonate group and / or a sulfate group bonded through an ionic bond to a chelating functional group having a cationic functional group, wherein the water-soluble chelating polymer contains 0.2 to 6 mmol / g of the chelating functional group and has a weight-average molecular weight in the range of 30,000 to 1,000,000.

The invention discloses a high-entropy layered double hydroxide with a strong strain effect and a preparation method of the high-entropy layered double hydroxide. The preparation method comprises the following steps: firstly, preparing ferric salt, cobalt salt, nickel salt, copper salt and zinc salt into a mixed aqueous solution of five metal salts; preparing sodium hydroxide and sodium carbonate into an alkali source aqueous solution; then mixing and stirring the mixed aqueous solution of the five metal salts and the alkali source aqueous solution to gradually form yellowish-brown precipitates, then transferring the yellowish-brown precipitates into a polytetrafluoroethylene reaction kettle, and further reacting in a drying oven; and finally, carrying out centrifugal separation, deionized water and absolute ethyl alcohol washing and freeze drying on the fully reacted precipitate to obtain brown powdery solid, namely the high-entropy layered double hydroxide. The high-entropy layered double hydroxide can be used for advanced oxidation catalytic degradation of tetracycline antibiotic wastewater, the strong strain effect of the high-entropy layered double hydroxide enhances the benefit of activating peroxymonosulfate to generate active free radicals, the efficiency of degrading water pollutants is improved, and the high-entropy layered double hydroxide has good application prospects.

The invention discloses nano ettringite particle reinforced aramid nanofiber aerogel as well as a preparation method and application thereof, and belongs to the technical field of aerogel. The preparation method provided by the invention comprises the following steps: dissolving a calcium source, an aluminum source and sulfate in water, adding a first surfactant, adjusting the pH value to 9-12, stirring for reaction, and after the reaction is finished, washing a solid product to be neutral to obtain nano ettringite particles; uniformly stirring and mixing the nano ettringite particles, para-aramid nanofibers, a second surfactant and a cross-linking agent in water to obtain an ettringite / aramid nanofiber dispersion liquid; the ettringite / aramid nanofiber dispersion liquid is sequentially subjected to concentration, directional freezing and freeze drying, and the ettringite / aramid nanofiber composite material is obtained. The preparation method disclosed by the invention is simple, the raw materials are easy to obtain, and the obtained nano ettringite particle reinforced aramid nanofiber aerogel has relatively high mechanical strength and thermal stability.

The invention provides a method and equipment for producing Li2CO3 based on coordinated roasting of lepidolite and spodumene. The method for producing Li2CO3 based on coordinated roasting of lepidolite and spodumene comprises the steps that S1, ore pretreatment is conducted, specifically, lepidolite and spodumene with the particle size smaller than 5 mm are evenly mixed according to the mass ratio of 1: (1-3), and the mixed ore is finely ground till the particle size is smaller than 75 microns; s2, additive mixing, wherein a composite additive is added into the mixed ore obtained after fine grinding and evenly mixed with the ore, and the composite additive is composed of fluoride, sulfate and a fluxing agent; and S3, coordinated roasting, wherein the mixed materials are fed into a rotary kiln to be roasted. According to the method for producing Li2CO3 based on coordinated roasting of the lepidolite and the spodumene, the lepidolite and the spodumene are roasted in a coordinated mode, the structural and chemical property differences of the lepidolite and the spodumene are utilized, advantage complementation is achieved, the overall extraction rate of lithium is increased, compared with a single lithium extraction technology, the lithium recovery rate can be increased by 10%-20%, and the waste residue generation amount is reduced.

The invention provides a method for identifying natural gas causes of a high-sulfur-content gas reservoir and application. The method comprises the following steps: S1, measuring carbon and hydrogen isotope and component data of high-sulfur-content natural gas of a research target layer and data of potential hydrocarbon source rock kerogen isotope and vitrinite reflectivity; s2, carrying out a natural gas sulfate thermochemical reduction reaction simulation experiment, and determining influence factors of the sulfate thermochemical reduction reaction on carbon and hydrogen isotopes and components of natural gas isotopes; s3, carrying out a potential hydrocarbon source rock hydrocarbon generation simulation experiment, and determining the influence of the hydrocarbon source rock thermal maturity on natural gas carbon and hydrogen isotopes and natural gas components; s4, selecting methane carbon and hydrogen isotopes of the natural gas as identification parameters according to the result, and establishing an identification chart of the gas source cause of the high-sulfur-content natural gas; and S5, substituting the measured carbon and hydrogen isotope values of the high-sulfur-content natural gas into the high-sulfur-content natural gas source cause judgment chart, and determining the cause and thermal evolution maturity of the high-sulfur-content natural gas sample.

The invention provides a self-heating tempering and valuable metal partition recycling method for copper smelting slag. The method comprises the steps that S1, a slag tempering agent is prepared from industrial sulfate waste and a low-cost carbonaceous reducing agent; s2, in the copper smelting matte smelting deslagging process, a tempering agent is added into molten slag, and phase adjustment reaction is completed through latent heat of the molten slag; s3, after the slag is slowly cooled, classifying the upper part and the lower part of materials in the slag ladle, and performing conventional crushing, ore grinding and flotation on the upper part to recover valuable metals; and S4, the lower part of sulfonium-rich slag enters a direct return smelting system or is crushed and levigated, and then copper concentrate is recycled through magnetic separation-reverse flotation. According to the copper smelting slag self-heating tempering and valuable metal partition recycling method, synergistic low-carbon treatment is conducted on copper smelting slag and sulfate waste residues according to the concept of treating waste with waste, the method has the advantages of being high in metal recycling rate, low in cost, environmentally friendly, simple in process and material and the like, good economic benefits and environmental benefits are achieved, and the industrial popularization difficulty is small.

The invention provides a purification and impurity removal method of a crude nickel-cobalt-manganese sulfate solution. The purification and impurity removal method comprises the following steps: (1) adding sodium thiosulfate into the crude nickel-cobalt-manganese sulfate solution to remove copper; (2) phosphate is adopted, the pH value is regulated, and titanium, iron, aluminum and the like are removed; (3) ferric sulfate is added, the pH value is regulated, and phosphorus and silicon are removed; (4) adding a bismuth agent and regulating the pH value to remove chlorine; (5) adding a fluorine agent to remove calcium and magnesium; and (6) adding a tillite mineral adsorbent to remove fluorine. According to the method, iron, aluminum, copper, fluorine, phosphorus, titanium, calcium, magnesium, chlorine, silicon and other elements can be efficiently removed from the rough nickel-cobalt-manganese sulfate solution, the loss of main metal is low, the prepared high-purity nickel-cobalt-manganese sulfate solution can directly meet the requirement of a precursor solution of a battery preparation level, the process is simple, the operation difficulty is low, industrial large-scale production is easy to achieve, and the method is suitable for industrial production. And the defects of the current preparation method of the high-purity nickel-cobalt-manganese sulfate solution are overcome.

The invention relates to the technical field of iron ore tailing resource utilization, in particular to a method for preparing iron oxide yellow by leaching iron ore tailings through an advanced oxidation technology, which comprises the following steps: adding a required amount of iron ore tailing powder into a persulfate solution, stirring to react, adding a reducing agent, boiling, filtering, adding alkali liquor to adjust the pH value, and filtering, thereby obtaining the iron oxide yellow. Pure liquid containing ferrous ions is obtained; taking part of the pure solution containing ferrous ions, and adding a potassium hydroxide solution to obtain an iron oxide yellow seed crystal solution; adding a pure solution containing ferrous ions into the iron oxide yellow seed crystal solution, adding an alkali solution to adjust the pH value, reacting, and separating and drying a product to obtain the iron oxide yellow. According to the method, the persulfate is adopted to leach iron from the iron ore tailings, and the iron oxide yellow is prepared from the leachate; harmless treatment of the iron ore tailings and value-added utilization of valuable resources are achieved, the raw material source of the iron oxide yellow industry is widened, and a wider prospect is provided for development of iron oxide yellow.

The invention belongs to the technical field of lithium slag resource utilization, and discloses a composite exciting agent for lithium slag as well as a preparation method and application of the composite exciting agent. The composite activator comprises the following components in parts by weight: 10-20 parts of an alkali activator, 10-20 parts of a sulfate activator, 15-30 parts of activated aluminum, 1-8 parts of a nano filler and 3-10 parts of a dispersant. An alkali activator and a sulfate activator are used as main materials, the advantages of the alkali activator and the sulfate activator are integrated, the alkaline environment promotes release of active silica-alumina species, the sulfate activator reacts with active aluminum to generate ettringite and other gel products, meanwhile, the active aluminum supplements aluminum ions, gel generation is promoted, and the gel is formed. The nano filler can fill pores and promote generation of C-S-H gel, and the dispersing agent can effectively disperse the active excitation component and the lithium slag.

The invention discloses a preparation process of an efficient water-absorbing and salt-resistant modified water-retaining agent, which specifically comprises the following steps: (1) mixing alkali liquor, an acrylic polymeric monomer and water to obtain a water-phase solution A; and (2) uniformly mixing the water-phase solution A with a cross-linking agent and a salt-resistant modified monomer, then adding an initiator, and carrying out polymerization reaction, the preparation method of the modified salt-tolerant monomer comprises the following steps: polymerizing a humate solution and starch hydrogel under the initiation of persulfate to obtain the salt-tolerant modified monomer. In the copolymerization reaction of the existing humic acid-based water-retaining agent, the starch hydrogel participates in the polymerization of the acrylamide, the acrylic acid and the modified monomer and has a synergistic effect with the functional group of the modified monomer in the raw materials, so that the comprehensive performance of the water-retaining agent is improved, and the molecular structure of the polymer provides good supporting force and mechanical strength.

The invention relates to the technical field of catalytic activation and wastewater treatment, in particular to a treatment method and device for double-way degradation of new pollutants in a water body by activating monopersulfate, and the treatment method comprises the following steps: preparing two catalysts, pretreating the water body, adjusting the pH value, detecting the pollutant concentration, activating and degrading in a first way and activating and degrading in a second way. According to the treatment method, the monopersulfate in the water body is sequentially activated by adopting two catalysts, and the new pollutants in the water body are degraded by two mechanisms through first-path activation degradation and second-path activation degradation respectively, so that the treatment method can efficiently degrade the new pollutants, the degradation range of the pollutants is large, and the treatment effect is good. The consumption of the oxidant monopersulfate can be reduced, and the cost loss is reduced. The device comprises a water body pretreatment chamber, a monopersulfate storage chamber, a non-free radical path reactor and a free radical path reactor, the device has the advantages of simple structure, low preparation cost and capability of efficiently degrading new pollutants.