7 results about "Olivine" patented technology

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.

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.

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.

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.

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%.