21 results about "Olivine" patented technology

The application relates to a high-selectivity ilmenite flotation process, and belongs to the technical field of flotation, and aims to solve at least one of the problems of poor ilmenite selectivity and poor collecting performance of the existing flotation method. In the ilmenite flotation process, a specific structure of a collector is selected, two hydroxyl imino groups are introduced into the same molecular structure, the solid-philic group formed by the two hydroxyl imino groups can improve the combination capacity between the collector and metal ions; the adsorption stability of the whole collector molecule on the mineral surface is enhanced, the collecting performance and selectivity of the collector molecule are improved; meanwhile, the raw ore is subjected to a plasma pretreatment method, the mineral surface structure can be changed, the impurities on the mineral surface can be reduced, the reaction activity of the mineral surface can be enhanced, the surface property difference between ilmenite and magnesium olivine can be improved, the collector molecule can chemically react with the ilmenite surface under weak acid conditions, the ilmenite flotation separation efficiency is improved, and the amount of sulfuric acid is reduced.

A method for in-situ sequestration and mineralization of CO2 includes providing an olivine formation (110) having a temperature of 100 to 200 °C, at least one injection wellbore (120) that connects a ground surface (130) and the formation (110), and providing an aqueous fluid to the formation (110). The method further includes introducing a pH adjuster to the formation (110) to adjust pH of the aqueous fluid to the range of from 7 to 8, injecting CO2 into the subterranean formation through the injection wellbore (120), dissolving CO2 in the aqueous fluid, and reacting CO2 with magnesium in the olivine. A system for in-situ sequestration and mineralization of CO2 includes an olivine formation (110), an aquifer (410) in a vicinity of the formation (110), at least one injection wellbore (120) configured to inject CO2 into the formation (110), and at least one transfer wellbore (420) connecting the injection wellbore (120) and the aquifer (410) to provide an aqueous fluid from the aquifer (410) to the formation (110).

The application relates to the technical field of paint, in particular to a low-cost dry powder paint special for alcohol-based casting and a preparation method thereof, which comprises the following raw materials in parts by weight: 40-60 parts of mica powder, 20-40 parts of attapulgite, 10-20 parts of kaolin, 2-4 parts of polyvinyl butyral, 4-6 parts of powder, 6-10 parts of additives, and 4-6 parts of bauxite. In the application, solid waste red mud is used as a binder core base material, the surface inert oxide layer of the red mud is stripped through oxalic acid solution activation, the high-activity silicate-aluminate porous framework is exposed, the low-cost bonding system with a three-dimensional network structure is constructed through ball milling and calcium lignosulfonate / temperature-sensitive monomer composite modification, and the bonding durability is enhanced through the ion crosslinking effect of beta-hemihydrate gypsum and magnesium olivine in the mixture. The comprehensive performance of the dry powder paint is ensured, the solid waste replaces traditional high-price silica sol and resin and other raw materials, and the raw material cost is significantly reduced.

A method for producing magnesium and forsythite by silicon-thermal method using magnesite resources belongs to the technical field of magnesium smelting. The method uses vacuum or relative vacuum technology, takes magnesite resources as raw materials, and uses ferrosilicon as a reducing agent. The method produces magnesium metal and separates the produced magnesium slag to obtain metal iron and high-quality magnesium-silicon forsythite, realizes high-value and full-quantitative utilization of the magnesium slag, and avoids large storage of the magnesium slag. Meanwhile, the method accurately judges the calcination endpoint based on online detection of CO2 concentration, realizes calcination-reduction integration, promotes the reaction of SiO2 and MgO in the magnesium slag to generate magnesium-silicon forsythite by adjusting the temperature and atmosphere, and can be directly used for refractory materials or building materials, thereby improving the resource utilization rate and greatly shortening the production cycle.

This invention discloses a method for preparing high-purity bulk polycrystalline olivine under hot isostatic pressing, comprising: completely sealing olivine sample powder under a vacuum of 10... –3 The sample chamber was placed in a steel cladding; the steel cladding was placed inside the graphite furnace cylinder of the high-pressure vessel of a hot isostatic pressing (HIP) apparatus, and a graphite sealing cap was placed on top; using argon as the pressure transmission medium, a multi-gradient HIP forming method of first increasing pressure and then increasing temperature was used to raise the temperature inside the cylinder sample chamber to 1200 °C and the pressure to 99.7 MPa, and the temperature and pressure were maintained for 4.8 hours; a multi-gradient cylinder cooling and depressurization method was used to reduce the temperature inside the sample chamber to 174 °C and the pressure to 57.2 MPa; finally, the pressure was released and the sample chamber was cooled to room temperature to obtain a polycrystalline dipyroxene peridotite aggregate; this method fills the technical gap in the preparation of large-volume experimental samples of high-density polycrystalline dipyroxene peridotite aggregates under high temperature and high pressure conditions.

The present invention relates to a method for producing a composite material from a cementitious body, aggregate, and reinforcing material. The cementitious body is produced by preparing a starting product containing at least 20% by mass of one or more components from ultramafic rock, weathered ultramafic rock, olivine, and / or industrial waste; homogenizing the starting product; and hydrothermally treating the homogenized starting product in a heat treatment apparatus at a temperature exceeding 100°C for at least 12 hours. Furthermore, the bound water of the converted starting product is dehydrated by heat treatment and / or reactive grinding. Subsequently, the converted and dehydrated starting product is used as a binder, and hardening water is added for hardening. The water / binder ratio is 1:2 or less. Before, after, and / or simultaneously with the addition of hardening water, aggregate and reinforcing material are added to the converted and dehydrated starting product to improve its load-bearing capacity. The reinforcing material is resistant to pH values ​​below 11 and / or provides protection against pH values ​​below 11. Additionally or alternatively, additives to increase the pH value of the pore solution in the cementitious material can be added to the starting product of the cementitious material.

The application discloses an A2O sewage treatment system and process for carbon emission reduction of sewage alkalization, and the system comprises sequentially connected anaerobic fermentation tanks, anoxic fermentation tanks, aerobic aeration tanks and sedimentation tanks, and the gas outlet of the anaerobic fermentation tank is connected with a gas production and purification column; magnesium-iron olivine is added into the aerobic aeration tank; the process uses alkaline minerals to purify the methane gas produced by the anaerobic tank in the anaerobic-anoxic stage, and at the same time, olivine is added in the aerobic process stage to improve the alkalinity of the treated sewage, and the regenerated water after alkalization is discharged into the sea to realize seawater alkalization and carbon sink increase, and offset part of the carbon emission in the sewage treatment process.

A vacuum pump comprising a stator (2) and two rotors received in at least one pumping chamber of the stator (2), the rotors being configured to rotate in the pumping chamber to drive a gas to be pumped between a suction port (4) and a discharge port (5) of the vacuum pump, characterized in that the stator (2) comprises at least one stator piece obtained by casting iron or steel in a mold receiving at least one sand core comprising a majority of sand selected from one or more of the following sands: artificial globular ceramic sand, chromite sand, bauxite sand, zircon sand, kerphalite sand, olivine sand, the surfaces of the cast stator piece (2) intended to be exposed to the pumped gases being coated. Figure 1

A method of making a cathode active material includes providing a first mixture including a mixed metal composition and phosphoric acid or a mixed metal composition and water. The mixed metal composition includes nickel, cobalt, manganese, or a combination thereof. A salt of iron, manganese, cobalt, or a combination thereof is added to adjust the stoichiometry of the mixed metal composition. The stoichiometrically-adjusted mixed metal composition in water can be contacted with a phosphorus-containing compound. The stoichiometrically-adjusted mixed metal phosphate is further contacted with a lithium-containing compound to provide the cathode active material having at least one phase having an olivine structure.

A carbon-sequestering concrete composition and method of production are disclosed. The composition comprises geopolymer binder components, aggregates, and alginate beads formed from brown algae powder through ionic gelation. The alginate beads significantly increase CO2 absorption surface area compared to algae powder, creating a matrix across the concrete surface that enhances long-term sequestration and improves durability. The beads interact synergistically with other concrete components, including geopolymers, fly ash, and ground granulated blast furnace slag, to enhance pozzolanic reactions and create additional sites for carbon dioxide capture. The alginate beads also facilitate the dissolution of minerals like olivine, further enhancing carbon capture. The composition demonstrates superior carbon sequestration capabilities, enabling sustained CO2 absorption throughout its service life. The method includes forming alginate beads, incorporating them into the concrete mixture, and allowing for initial hardening and drying processes that promote carbon dioxide absorption directly from the air.

A method for in-situ sequestration and mineralization of CO2 includes providing an olivine formation having a temperature of 100 to 200° C., at least one injection wellbore that connects a ground surface and the formation, and providing an aqueous fluid to the formation. The method further includes introducing a pH adjuster to the formation to adjust pH of the aqueous fluid to the range of from 7 to 8, injecting CO2 into the subterranean formation through the injection wellbore, dissolving CO2 in the aqueous fluid, and reacting CO2 with magnesium in the olivine. A system for in-situ sequestration and mineralization of CO2 includes an olivine formation, an aquifer in a vicinity of the formation, at least one injection wellbore configured to inject CO2 into the formation, and at least one transfer wellbore connecting the injection wellbore and the aquifer to provide an aqueous fluid from the aquifer to the formation.

The invention relates to a method for manufacturing a stator part of a vacuum pump obtained by casting cast iron or steel, comprising a stator (2) and two rotors (3) housed in at least one pump chamber of said stator (2), these rotors (3) being configured to rotate in said pump chamber, the invention relates to a vacuum pump (1) comprising a stator element (2) made in a mould containing at least one sand core (15, 16) mainly comprising sands selected from one or more sands selected from the group consisting of artificial spherical ceramic sands, chromite sands, bauxite sands, zircon sands, hornblende sands, olivine sands, in order to drive the gas to be pumped between the suction opening (4) and the discharge opening (5) of the vacuum pump, said stator element being made in a mould containing at least one sand core (15, 16), the surface of the stator part (2) made by casting, which is to be exposed to the pumped gas, is coated with a coating.

The invention discloses a method for extracting magnesium from magnesium-containing silicate tailings, and belongs to the technical field of comprehensive utilization of mineral resources. The magnesium-containing silicate tailings are ground and subjected to a curing reaction with concentrated sulfuric acid, a serpentine phase, an olivine phase and a diopside phase are destroyed, and soluble magnesium sulfate clinker is generated; the soluble magnesium sulfate clinker is subjected to water leaching treatment, and magnesium-containing leachate is obtained; the magnesium-containing leachate is sequentially subjected to oxidation impurity removal and precipitation impurity removal, and a magnesium sulfate solution is obtained; carrying out precipitation reaction on the magnesium sulfate solution to obtain a magnesium hydroxide product; the magnesium-containing silicate tailings comprise more than 70 wt% of serpentine phase, olivine phase and diopside phase. According to the method disclosed by the invention, efficient extraction of magnesium is realized, and meanwhile, an effective way for resource utilization is provided for a large amount of stockpiled tailings difficult to treat.

Method of reacting carbon dioxide with a metal silicate, preferably a nesosilicate material such as olivine. The metal silicate particulate material is placed in a container having a container wall, with water in a bed or in a suspension in the water, and the particulate material is agitated. The agitation may occur via an air stream that is blown into the container via a diffusor. Alternatively, the particulate material is agitated by vibrating at least a part of the wall of the container. The abrasion of the particles that collide with each other continuously cleans the particle surface, and maintains a high reaction rate, allowing new CO2 to react with a continually refreshed interface.

The invention discloses a method for intensifying capture and recovery of valuable metals in olivine type iron-rich non-ferrous metal smelting slag, which comprises the following steps: proportioning olivine type iron-rich non-ferrous metal smelting slag with strontium carbonate, manganese carbonate and calcium carbonate additives, carrying out oxygen-rich roasting, and carrying out cooling, ore grinding and magnetic separation on the obtained roasted product to obtain the valuable metals in the olivine type iron-rich non-ferrous metal smelting slag. The valuable metal enriched product can be used as an important raw material for nonferrous metallurgy. The method is particularly suitable for enrichment and separation of valuable metals nickel, cobalt, copper and zinc wrapped in the complex olivine type non-ferrous metal smelting slag.

The nonaqueous electrolyte storage element of one aspect of the present application has: a positive electrode containing positive electrode active material particles including a compound having an olivine-type crystal structure, and a nonaqueous electrolyte containing a salt having oxalate complex anions; a D50 particle diameter of the positive electrode active material particles is 3 μm or less, and a BET specific surface area of the positive electrode active material particles is 10 m 2 / g or less.

The invention discloses a method for improving the iron grade of magnetic separation iron ore concentrate of copper separation tailings of copper smelting slag, and relates to the field of hydrometallurgy and comprehensive recovery of secondary resources. The method comprises the following steps: leaching the copper smelting slag copper separation tailings by adopting a sulfuric acid solution, filtering, collecting to obtain leached slag, carrying out ore grinding treatment on the leached slag, and carrying out magnetic separation to obtain an iron ore concentrate product; the concentration of the used sulfuric acid solution is 0.1 mol / L to 0.4 mol / L; based on the acid decomposition difference of fayalite and magnetite, a selective acid leaching process is adopted, and ore grinding and magnetic separation procedures are cooperated: fayalite is directionally decomposed through acid leaching, and conditions are created for subsequent magnetite enrichment; and the continuous structure of the magnetite, gangue minerals and undecomposed fayalite is broken through ore grinding, efficient separation of the magnetite is finally achieved through magnetic separation, and the grade and the recovery rate of iron ore concentrate are remarkably improved. The method is easy and convenient to operate, can meet the requirement for recycling iron resources in the copper smelting solid waste, and provides a feasible path for high-value utilization of secondary resources.

The application discloses a system for deep purification and key metal recovery of olivine dissolution solution based on a self-catalytic growth mechanism, which comprises the following units on a fluid path: a first unit, a low-reduction-potential pretreatment module; and a second unit, a self-growth adsorption purification module loaded with seed active bodies; the olivine dissolution solution treated by the first unit is contacted with the seed active bodies, Ni and Co in the solution are adsorbed by the seed active bodies, and Mn (II) on the surface of the seed active bodies is subjected to an in-situ self-catalytic oxidation reaction with a manganese oxide adsorbent to generate a newly-generated manganese oxide active layer, so as to compensate for the loss of the adsorbent or increase the adsorption sites. The application further discloses a treatment process of the system. The application can realize the in-situ self-growth of the adsorbent by using the elements released by the mineral itself, and realizes the efficient recovery of heavy metals, thereby significantly prolonging the operation cycle of the system, and can be applied as a part of an integrated land-based or sea-based alkalization plant.

This invention relates to a low-temperature resistant cathode material, its preparation method, and its application. The low-temperature resistant cathode material comprises a two-layer structure: a core and an outer layer. The core includes a first component and a second component. The first component is an olivine-structured cathode material with a particle size of 100 nm–30 μm, and the second component is a solid electrolyte material with a particle size of 10 nm–2 μm. The second component is uniformly embedded in the first component, forming a mixed material with a particle size of 100 nm–50 μm. The outer layer is Li. x A y B z Materials, wherein A includes one or more of copper, iron, nickel, manganese, vanadium, carbon, and phosphorus; B includes one or more of N, O, F, S, Cl, and Br, and 1≤x≤5, 1≤y≤2.2; 1≤z≤4; the outer layer Li x A y B z The material particles are uniformly covered on the surface of the mixture material, forming a coating structure with a coverage of 60%-100%.

This invention provides a method for improving the automatic pouring rate of steel ladles using high-manganese steel-specific diverting sand. The method involves: cleaning the surface of the nozzle seat bricks with a coarse oxygen tube, cleaning the inside of the nozzle eye with a fine oxygen tube until the oxygen tube stops igniting, installing the slide plate, cleaning the fire mud a second time, closing the mechanism, waiting for the first time, and then purging again; using a gradient filling method, the lower layer uses magnesium olivine sand, and the upper layer uses high-manganese steel-specific diverting sand. The composition and mass percentage of the high-manganese steel-specific diverting sand are: MnO content 6-8%, MgO content 2-3%, magnesium iron spinel 35-40%, zircon content 20-24%, and carbon content 3-5%; the upper layer of high-manganese steel-specific diverting sand forms mushroom-shaped bulges covering the nozzle seat bricks. The slide plate opens fully at once, achieving automatic pouring with an automatic pouring rate of over 99.4%.

An olivine-structured nickel manganese phosphate active material includes a general structural formula of NibMndMePO4. b is greater than or equal to 0.1 and greater than or equal to 0.95. d is greater than or equal to 0.05 and greater than or equal to 0.90. e is greater than or equal to 0 and greater than or equal to 0.5. A doping element M includes one or a combination of Fe, Al, Co, Ca, Pb, Na, Ti, Zr, Mo, V, Nb, Sc, Cr, Cu, Zn, Be, La, Mg, N, or S.