104 results about "Sulfide minerals" patented technology

The invention provides a composite reagent system and a chalcopyrite and sphalerite collecting method, and belongs to the technical field of mineral processing. The composite reagent system comprises a histidine derived functional group collecting agent and a black agent, and the histidine derived functional group collecting agent (containing a total sulfur ester group, a sulfydryl functional group and a side chain imidazole ring) serves as a core and is compounded with the black agent according to a specific proportion to form a target combination-synergistic interaction flotation mechanism. The histidine derivative collecting agent derives high-activity functional groups under the alkaline condition, and after sulfydryl is dissociated, stable chemical bonds are formed by the dissociated sulfydryl and metal ions on the surfaces of the chalcopyrite and the zinc sulfide. The black powder serves as an auxiliary collecting agent, and the collecting capacity of fine-grain or low-activity sulfide minerals is enhanced through chemical adsorption of dithiophosphate radicals and metal ions on the surfaces of the chalcopyrite and the sphalerite. After the two components are compounded, the selective enrichment efficiency of copper-zinc minerals in the flotation process is remarkably improved.

The invention discloses a carlin type gold concentrate in-situ self-excitation and enhanced gold leaching method which comprises the following steps: adding an oxidizing agent and an alkaline reagent into a carlin type gold concentrate ore pulp system in a continuous, slow and proper adding manner at normal temperature and normal pressure, maintaining the oxidation potential of the ore pulp system to be-600 to-15.3 mV and the pH value to be 7 to 11, and carrying out in-situ self-excitation and enhanced gold leaching on the carlin type gold concentrate; and gold-loaded sulfide minerals in the gold concentrate are subjected to in-situ oxidation in a leaching system to generate stable thiosulfate as a gold leaching agent, so that in-situ self-excitation and enhanced gold leaching of the Carlin type gold concentrate are realized. According to the method, thiosulfate is formed through in-situ self-excitation, meanwhile, gold is extracted through in-situ complexing, consumption of external thiosulfate is reduced, pretreatment is not needed in the gold leaching process, the technology is simpler, the production cost is lower, the good gold extraction rate is guaranteed, meanwhile, no special requirement for equipment is needed, and the system is more controllable.

The invention provides a gold ore phase analysis method, and belongs to the field of mineral analys.The gold ore phase analysis method comprises the steps that a gold ore sample is prepared into ore pulp, the pH value is adjusted to 10-11, ultrasonic cavitation treatment is conducted after polyethylene glycol is added, and limonite turbid liquid and sedimentation bottom mud are obtained through separation; the turbid liquid is subjected to flocculation precipitation, drying, roasting, acid dissolution and impurity removal, and the limonite gold-loaded grade is obtained through the mass difference before and after dissolution and gold concentration determination; separating metal sulfide ore heavy minerals and gangue minerals from the settled bottom mud through artificial heavy elutriation, performing acid dissolution and impurity removal on the metal sulfide heavy minerals, and calculating the gold loading grade of the metal sulfide heavy minerals through mass difference and gold concentration determination; after gangue minerals are subjected to oxidizing roasting, the gold content is measured after concentrated acid dissolution; and calculating the distribution rate of gold based on the result. The gold loading grade and distribution of the limonite phase, the metal sulfide ore phase and the gangue mineral phase are measured in a split-phase mode, the method is highly matched with the gold ore development process, operation is easy and convenient, the result is reliable, and beneficiation and metallurgy technological process formulation and technical index pre-judgment can be effectively served.

The invention relates to the technical field of mineral separation, in particular to a method for reducing the content of sericite in porphyry type copper tailings. The method specifically comprises the following steps that reselection grading operation is conducted on the porphyry type copper tailings, and a coarse-fraction product and a fine-fraction product are obtained; the reselected fine-fraction product is fed into magnetic separation operation to remove ferromagnetic minerals; performing multi-channel flotation operation on the strong magnetic tailings to remove sulfide minerals; the obtained desulfurized flotation tailings are fed into reverse flotation operation after the ore pulp concentration and the pH value are adjusted, and the reverse flotation tailings are sericite products; in order to solve the problems that the content of micro-fine particle sericite in the porphyry type copper tailing dam is high, and the dam break risk hidden danger is increased, the reselection-magnetic separation-desulfurization flotation-reverse flotation combined process is adopted, the recovery rate of the sericite in the copper tailings is 26%-30%, the content of the sericite in the tailings is greatly reduced, and the safety of the dam body is improved.

The invention discloses a beneficiation method for tin-silver symbiotic polymetallic ore and application of the beneficiation method, and relates to the technical field of mineral separation. Comprising the steps that after tin-silver symbiotic polymetallic ore is ground, undersize minerals are obtained through a high-frequency screen, silver-copper flotation is conducted on the undersize minerals, and silver-copper concentrate and silver-copper tailings are obtained; the silver-copper tailings are subjected to lead-zinc-sulfur flotation, and lead concentrate and zinc-sulfur tailings are obtained; and the zinc-sulfur tailings are subjected to zinc-sulfur flotation, and zinc-sulfur concentrate and tin-sulfur tailings are obtained. The concentration of ore pulp in the ore grinding process is controlled, it is guaranteed that cassiterite and sulfide minerals are fully dissociated, then a first inhibitor is added in the lead-zinc-sulfur flotation process, the valuable metal recovery efficiency can be enhanced by optimizing the flotation process and collaboratively innovating a reagent formula according to the complex characteristics of tin-silver symbiotic polymetallic ore, and the recovery rate of the tin-silver symbiotic polymetallic ore is increased. The contents of silver, copper and tin in the tailings are obviously reduced, and efficient utilization of resources and reduction of solid wastes are realized.

The invention provides a heavy metal stabilization method for sulfur-containing tailings, and belongs to the technical field of heavy metal pollution remediation. The method provided by the invention comprises the following steps: mixing the sulfur-containing tailings with a stabilizer to obtain a mixed material; the OCP value of the stabilizer is lower than that of metal carrier sulfide minerals in the sulfur-containing tailings; and after the mixed material is leached with an ethanol solution, maintenance is conducted, and the stable sulfur-containing tailings are obtained. According to the method provided by the invention, based on the primary battery effect, the stabilization of the heavy metals in the sulfur-containing tailings is realized in a sacrificial anode manner, and the stabilization effect of the heavy metals in the sulfur-containing tailings can be remarkably improved by combining with quenching of free radicals by leaching of the ethanol solution. The result of the embodiment shows that the stabilization rate of lead in the sulfur-containing tailings can reach 79.1% or above, the stabilization rate of cadmium in the sulfur-containing tailings can reach 14.7% or above, and the method has an excellent stabilization effect on lead and cadmium in the sulfur-containing tailings.

The present invention provides a leaching method for sulfide minerals, which comprises: grinding the sulfide minerals for a second time, adding concentrated sulfuric acid during the second grinding for pre-activation, and obtaining a second-grinded material; adding the second-grinded material into a sulfuric acid solution for normal pressure leaching to obtain a normal pressure leaching slurry; wherein, at least one of stirring, introducing oxygen, and maintaining the normal pressure leaching temperature is performed during the normal pressure leaching process; filtering the normal pressure leaching slurry to obtain normal pressure leaching slag and normal pressure leaching liquid; slurrying the normal pressure leaching slag with sulfuric acid solution, and then performing pressure leaching, and performing at least one of introducing oxygen, adjusting the air pressure, and adjusting the initial temperature of the pressure leaching during the pressure leaching process, filtering after the reaction is complete, and obtaining a pressure leaching liquid and a pressure leaching slag. The method can improve the leaching rate of the target metal in the normal pressure leaching stage, reduce the processing amount of sulfide minerals in the pressure leaching stage, and reduce energy consumption, cost, and safety hazards.

The invention relates to an alkenyl thionocarbamate compound as well as a preparation method and application thereof, the structural formula of the thionocarbamate compound is # imgabs0 #, R, R1 and R2 are respectively and independently one of alkyl, aryl, ester group and halogen; r3 is one of alkyl, alkenyl and aryl; the compound can be used as a sulphide mineral collecting agent and shows excellent performance in the mineral separation process of sulphide minerals which are difficult to separate, such as chalcopyrite and pyrite.

The invention discloses a high-temperature and high-pressure synergistic treatment method for red mud and coal or coal gangue. The method comprises the following steps: mixing red mud, coal or coal gangue and water, and putting the mixture into a high-temperature pressure device; oxygen-containing gas is introduced or an oxidizing agent is added, the red mud and the coal or the coal gangue are subjected to mineral decomposition and reconstruction under the high-temperature and high-pressure conditions, and acidic substances generated by oxidation of sulfide minerals and carbon-based minerals in the coal or the coal gangue and alkaline substances in the red mud are subjected to a neutralization reaction; a reaction product of red mud and coal or coal gangue is desalted to serve as ecological matrix soil. According to the method, decomposition and alkali release of alkaline minerals such as nepheline in the red mud are accelerated through high temperature and high pressure, oxidation of carbon-based minerals and sulfide minerals in coal or coal gangue and conversion of humus / humic acid and the like are accelerated, alkaline substances produced through reaction are neutralized with acidic substances, and rapid dealkalization of the red mud is achieved; and the oxidation degree of the carbon-based minerals is controlled to increase the content of organic matters in a reaction product, so that full-amount resource and ecological utilization of the red mud and the coal or the coal gangue is realized.

The present invention discloses a screening method for a collector for the simultaneous enrichment of lead and silver based on coordination chemistry and electrochemistry, comprising: obtaining electrochemical information on the solid-solid interaction between silver minerals and galena; obtaining galena, silver minerals, and their potential target ore-loving groups, and outputting a chk file; analyzing and quantitatively calculating the chk file to obtain orbital shapes and energy level information of the frontier molecular orbitals of the relevant minerals and ore-loving groups; preliminarily determining the target ore-loving groups of the silver minerals; thermodynamically determining whether the preliminarily determined target ore-loving groups have better adsorption properties for silver minerals than other ore-loving groups; and calculating the solvation free energy of derivatives of the target ore-loving groups with different carbon chain lengths and shapes to determine the final ore-loving agent. The present invention combines sulfide mineral flotation electrochemistry with flotation coordination chemistry for the first time, overcoming the limitations of previous agent screening designs and providing a new method for the research and development of special collectors for co-existing rare metal resources.

A polymetallic low-grade tin ore beneficiation process, comprising the following steps: 1) grinding; 2) classification; 3) magnetic separation: a first middling, a second rough concentrate, and a second middling are combined for wet magnetic separation to obtain magnetic tailings and a magnetic concentrate, a flotation agent is added to the magnetic tailings for conditioning, then flotation is performed to obtain a flotation concentrate and flotation tailings, and the flotation tailings are thickened, ground, and returned to a first-stage shaking table for re-beneficiation; 4) bulk flotation of sulfide minerals; and 5) re-beneficiation of a tin concentrate using a shaking table.

A system and process for bioleaching target metals from sulfide mineral ores and concentrates uses organisms that are genetically modified to produce excessive amounts of amino acids and related compounds, where the organisms are supplied within leach solutions to leach pads comprised of sulfide mineral ores or to leach solutions in CSTRs.

Provided herein are methods, systems, and compositions for degrading minerals. The methods, systems, and compositions provided herein involve the use of siderophores to degrade minerals such as sulfide materials. The methods, systems, and compositions provided herein may be used to release metal from sulfide mineral materials. The methods, systems, and compositions provided herein may further involve collecting, extracting, and / or purifying the metal released from the minerals.

The system comprises a crushing box, a magnetic separation tank I, a magnetic separation tank II, a mixing tank I, a flotation machine I, a mixing tank II, a flotation machine II and a centrifugal unit, and scheelite concentrate and fluorite concentrate are obtained. According to the method, magnetic separation and flotation are conducted in sequence, corrosion of ore pulp acidity to magnetic separation equipment is reduced, meanwhile, the ore pulp is acid through oxalic acid pickling, and oxalic acid serves as organic acid, has high chelation capacity and reducibility and can effectively react with oxides and pollutants on the surfaces of minerals, and the oxides and the pollutants are removed from the surfaces of the minerals. Meanwhile, oxalic acid can also react with sulfide minerals to change the surface properties of the sulfide minerals, so that the sulfide minerals are more easily captured and recycled in the flotation process. Under an acidic condition, oxalic acid can more effectively react with metal ions on the surface of fluorite to form a stable complex. The hydrophobicity of fluorite particles is enhanced, the fluorite particles are captured by a flotation agent and float to the surface of ore pulp, fluorite flotation is enhanced, and interference to scheelite flotation is reduced.

The present invention relates to the field of mineral processing technology, and more specifically to a flotation method for arsenic-containing copper sulfide ore, comprising: first, coarsely grinding the raw ore, and adopting a process of "one roughing, two scavenging, and two concentrating" to suppress sulfur-copper-arsenic mixed selection at low alkalinity to obtain a copper-arsenic mixed concentrate and tailings; then, concentrating and re-grinding the copper-arsenic mixed concentrate to remove the drug, and adopting a "one roughing, two scavenging, and two concentrating" process to enhance copper-arsenic separation through slurry adjustment, coupled regulation of a combined inhibitor, and collection with a collector, thereby achieving efficient sorting of arsenic-containing copper sulfide ore. The present invention uses a combined inhibitor to effectively regulate the surface of the arsenic-containing mineral. The combined inhibitor achieves selective inhibition of arsenic-containing sulfide minerals such as arsenic-containing copper sulfide ore, tetrahedrite, and arsenopyrite through the technology of "oxidative modification-metal ion modification-organic compound coupling modification."

The present invention discloses a system for efficiently recovering scheelite and fluorite from polymetallic mud ore, comprising a crushing box, a first magnetic separation tank, a second magnetic separation tank, a first mixing tank, a first flotation machine, a second mixing tank, a second flotation machine, and a centrifugal unit, to obtain scheelite concentrate and fluorite concentrate. By adopting the method of first magnetic separation and then flotation, the corrosion of the acidity of the ore pulp on the magnetic separation equipment is reduced. At the same time, the ore pulp is acidic by pickling with oxalic acid. Oxalic acid, as an organic acid, has strong chelating ability and reducing properties, and can effectively react with oxides and pollutants on the surface of the mineral to remove them from the mineral surface. At the same time, oxalic acid can also react with sulfide minerals, changing the properties of their surface, making them easier to be captured and recovered during the flotation process. Under acidic conditions, oxalic acid can more effectively react with metal ions on the surface of fluorite to form stable complexes. The hydrophobicity of fluorite particles is enhanced, so that they are captured by the flotation agent and float to the surface of the ore pulp, thereby enhancing the flotation of fluorite and reducing interference with the flotation of scheelite.

An electrochemically mediated, hydrometallurgical method is provided for extraction of nickel, zinc, lead, silver, molybdenum, and / or copper from sulfide minerals. These metal concentrates, such as pentlandite, pyrrhotite, pyrite, sphalerite, galena, Ag2S, MoS2, etc., are contacted with nitric acid and cerium(IV) nitrates, cerium(IV) methanesulfonate, and / or cerium(IV) sulfate, as oxidative leaching agents to preferentially leach the target metals contained therein. The strong oxidizing capacity of cerium(IV) enables rapid dissolution of metal sulfides under ambient conditions. Cerium(IV) can be electrochemically regenerated and recycled for treatment of additional sulfide minerals. Target metal products can be extracted via processes such as solvent extraction and precipitation, enabling complete recovery, e.g., of nickel from pentlandite.

The invention discloses a method for extracting gold through leaching after preoxidation of sulfide gold ore, and aims to solve the problems of low recovery rate, serious environmental pollution and the like of a traditional gold extraction method. The method comprises the following steps: firstly, mixing and finely grinding the gold sulfide ore and caustic soda flakes to 325 meshes, and adjusting the concentration of ore pulp to 33%; then, oxygen-enriched air is introduced into the reaction kettle and heated to 90 DEG C, pre-oxidation treatment is carried out for 18 hours, sulfide minerals are oxidized and decomposed, and gold particles are exposed; then, adding a golden cicada environment-friendly gold extraction agent and activated carbon for leaching, continuously reacting for 18 hours to form a thiosulfate complex of gold, and adsorbing the thiosulfate complex by the activated carbon; and finally, recovering gold by filtering and analyzing electrolytic activated carbon, and performing dry discharge on tailings to prepare bricks. By implementing the method, the leaching recovery rate of gold can be remarkably increased to 97%, meanwhile, cyanide is prevented from being used, environmental pollution is reduced, comprehensive utilization of resources is achieved, and the method has the multiple advantages of being efficient, environmentally friendly, economical and the like.

The invention discloses a screening method for a lead-silver synchronous enrichment collecting agent based on coordination chemistry and electrochemistry. The screening method comprises the steps that electrochemical information of solid-solid interaction of silver minerals and galena is obtained; the method comprises the following steps: acquiring galena, silver minerals and possibly potential targeted ore-philic groups thereof, and outputting a chk file; analyzing and quantitatively calculating the chk file to obtain the orbit shape and energy level information of the front molecular orbits of the related minerals and the ore-philic groups; preliminarily determining a targeted ore-philic group of the silver mineral; thermodynamically determining whether the adsorption performance of the preliminarily determined targeted ore-philic group on the silver minerals is superior to that of other ore-philic groups or not; and calculating the solvation free energy of the targeted ore-philic group derivatives with different carbon chain lengths and shapes, and determining the final ore-philic agent. According to the method, sulfide mineral flotation electrochemistry and flotation coordination chemistry are combined for the first time, the limitation of traditional agent screening design is overcome, and a brand-new method is provided for research, development and design of co-associated rare metal resource special-effect collectors.

A flotation frother for separating sulfide minerals from clay minerals and a preparation method thereof. The flotation frother is composed of the following components in parts by weight: 3-8 parts of polyethylene glycol, 8-22 parts of mixed hexavalent alcohol, 10-18 parts of mixed ether alcohol, C5-C 14 Mixed fatty alcohol ether ester blended with 36-66 parts diesel; the mixed hexavalent alcohol is a mixture of cyclohexanol and methyl isobutyl carbinol; the mixed ether alcohol is a mixture of butyl ether alcohol, tripropylene glycol methyl ether and tripropylene glycol butyl ether; the C5-C 14 Mixed fatty alcohol ether ester blended diesel to produce industrial C5~C 14 A mixture of fatty alcohol ether ester and light diesel. The flotation frother provided by the present invention, by compounding the various components and utilizing the synergistic effect between the components, can effectively achieve the flotation separation of copper sulfide, nickel, and molybdenum minerals from common clay gangues such as talc, serpentine, chlorite, and mica, thereby improving the comprehensive recovery and utilization rate of copper sulfide, nickel, and molybdenum ore resources.

The invention provides a combined separation method for lead-zinc-silver ore associated with iron and manganese, belongs to the field of ore dressing, and realizes effective separation and recovery of different metals in the lead-zinc-silver ore associated with iron and manganese through processes of raw ore crushing, wet grinding, bulk flotation and magnetic separation. According to the flotation-magnetic separation combined technology, a conventional flotation reagent is adopted, the reagent cost is reduced, and meanwhile silver-containing minerals and sulfide minerals are effectively collected. According to the method, a silver-lead-zinc preferential flotation process and a subsequent separation step are omitted, and the reagent cost and the mineral separation cost are remarkably reduced. The device is high in adaptability and easy and convenient to operate, the regulation and control difficulty of a production line and the operation difficulty of workers are reduced, and the loss of silver in the separation process is avoided. By simplifying the process and improving the recovery rate, the method is beneficial to reducing environmental pollution and promoting effective utilization of resources. Aiming at the associated iron-manganese-lead-zinc-silver ore with complex components, the flotation-magnetic combined process can effectively separate various valuable metals and impurity minerals, and the ore dressing efficiency is improved.

The invention discloses a beneficiation method for intensively recovering tungsten and fluorite in sulphide ore flotation tailings, which comprises the following steps: aiming at the sulphide ore flotation tailings with high pyrrhotite content, before scheelite and wolframite flotation, intensively floating and recovering pyrrhotite which is difficult to float, reducing the sulfur content in floating tungsten feed to be about 0.05 percent, and recovering the tungsten and fluorite in the sulphide ore flotation tailings; the influence of sulfide minerals on the tungsten flotation process is eliminated, the obtained tungsten concentrate continues to be subjected to flotation, and in the flotation process, the flotation process aims at sulfide ore flotation tailings which are fine in fluorite dissemination particle size, low in flotation feeding fluorite dissociation degree, high in content of calcium gangue minerals, silicate minerals, mica and the like and extremely complex in gangue components. Fluorite minerals subjected to monomer dissociation are subjected to selective trapping and selective inhibition recovery, fluorite intergrowth minerals are subjected to reinforced flotation, selective ore grinding and reinforced gangue mineral inhibition separation, and tungsten concentrate and fluorite concentrate with high grade and high recovery rate can be obtained.

The invention belongs to the technical field of beneficiation recovery, and particularly relates to a beneficiation method for recovering silver, copper, lead, zinc, antimony and sulfur from complex silver-tin paragenic ore. The beneficiation method comprises the steps of raw ore grinding, flotation of silver, copper, lead, antimony, sulfur and the like, separation of silver, copper, lead, antimony and sulfur, separation of lead, antimony and sulfur, mixed flotation of zinc and sulfur, separation of zinc and sulfur and the like. According to the characteristics of the complex silver-tin paragenetic ore, efficient enrichment and separation of valuable minerals in the complex silver-tin paragenetic ore are achieved by utilizing floatability difference of sulfide minerals and step-by-step flotation enrichment, silver, copper, lead, antimony, zinc and sulfur resources in the complex silver-tin paragenetic ore are effectively recycled, and the beneficiation method is low in reagent dosage, good in separation effect and advanced in index.

The present disclosure is directed to a process for recovering copper and cobalt from copper and cobalt-containing sulfide ores and concentrates, particularly relatively low grade cobalt bearing sulfide ores and concentrates. The process comprising floating a material comprising non-sulfide gangue minerals and copper-containing sulfidic minerals, cobalt-containing sulfidic minerals, and iron pyrite; contacting a lixiviant with a separated portion to form a pregnant leach solution comprising ferric iron and sulfuric acid and at least most of the copper and cobalt in the sulfidic minerals; treating the pregnant leach solution, by ion exchange and / or solvent extraction to form a rich solution comprising at least most of the copper and a raffinate, removing at least most of the copper and ferric iron to form a purified raffinate, and recovering at least most of the cobalt.

A method for extracting copper from sulphide mineral ore, comprising the following steps: stacking the ore to form a pile (heap), a leaching step, irrigating the pile with a first irrigating solution containing an acidic nitrate solution and nitrite, thereby causing the oxidation of sulfide minerals inside the pile, oxidation of gaseous nitrogen oxide released during the oxidation of sulfide minerals inside the pile with oxygen to form nitrogen dioxide, and hydrolysis of nitrogen dioxide to form nitric acid and / or nitrous acid in the first irrigating solution inside the pile, to continue the leaching stage and reduce nitrogen oxide losses from the pile.

This invention discloses a flotation process for recovering apatite from iron ore tailings, belonging to the field of mineral processing technology. It includes the following steps: 1. High-gradient magnetic separation is applied to the iron ore tailings to recover and remove magnetic iron-bearing minerals. The removed iron-bearing minerals are returned to the main iron ore processing flow. The tailings enter a sluice to remove large gangue minerals, and then enter a thickener for concentration. 2. The underflow product from the thickener is subjected to sulfide mineral flotation and gypsum flotation to remove easily interfering impurities, followed by apatite collecting direct flotation to obtain apatite concentrate. 3. The apatite concentrate is subjected to ultrafine grinding for liberation and selective mudification of impurities, followed by closed-circuit apatite cleaning to obtain a qualified apatite concentrate product. This invention can achieve good recovery and utilization of apatite from iron ore tailings and has great economic feasibility.

The present invention relates to a Solid-Liquid-Solid (SLS) hydrometallurgical method in the presence of hydrated and / or non-hydrated salts under supersaturation conditions. This method enhances the chemical and physical reactions on the ore or concentrates, thereby causing crystallization, recrystallization, and release of copper through non-stoichiometric decomposition of the sulfide, followed by precipitation with chloride. The invention comprises three stages: a) Wetting, b) Drying and Supersaturation, and c) Washing and Re-wetting. These stages occur at temperatures of 20 to 40°C, regardless of the redox potential, with minimal water and acid consumption and without the need for oxygen addition. The method reduces acid and water consumption because the sulfide transformation can be achieved using only hydrated salts and / or minimal acid and water.Furthermore, the present invention allows for a reduction in water usage during the agglomeration and / or agglomeration-curing stage. This is because, when the hydrated salt is mixed with the mineral, the water molecules in the hydrated salt moisten the mineral, reducing the volume of water that must be added during the wetting and agglomeration and / or curing stages. The method of the present invention can also be applied to sulfide base metals such as nickel, zinc, cobalt, lead, and molybdenum, among others, regardless of common impurities in sulfide minerals, such as the presence of arsenic.

The application discloses a method for high-temperature and high-pressure collaborative treatment of red mud, coal or coal gangue, and belongs to the field of resource utilization of red mud, coal or coal gangue. The method comprises the following steps: mixing red mud, coal or coal gangue and water, and then placing the mixture into a high-temperature and high-pressure device; introducing an oxygen-containing gas or adding an oxidant; under the high-temperature and high-pressure conditions, mineral decomposition and reconstruction of the red mud and the coal or coal gangue occur, acidic substances produced by oxidation of sulfide minerals and carbon-based minerals in the coal or coal gangue and alkaline substances in the red mud are subjected to neutralization reaction; and after desalination of reaction products of the red mud and the coal or coal gangue, the reaction products are used as ecological matrix soil. The method disclosed by the application accelerates decomposition of alkaline minerals such as nepheline in the red mud and release of alkali under high-temperature and high-pressure conditions, and accelerates oxidation of carbon-based minerals and sulfide minerals in the coal or coal gangue and transformation of humus and humic acid, neutralizes alkaline substances and acidic substances produced in the reaction, realizes rapid dealkalization of the red mud, controls the degree of oxidation of the carbon-based minerals, and improves the content of organic matter in the reaction products, so that full resource utilization and ecological utilization of the red mud, the coal or the coal gangue are realized.

The present invention relates to compositions that are stable over time in an aqueous medium and comprise thionocarbamate-derived compounds, and to the preparation method thereof. The invention also relates to aqueous collector compositions that are stable for extended periods of time and suitable for use in processes involving the froth flotation of sulfide minerals for the extraction of valuable metals, the compositions comprising compounds derived from thionocarbamate that are stable in an aqueous medium, compounds derived from mono- and dithiophosphates, stable ionic xanthate solutions and lignin.