12 results about "Density separation" patented technology

The invention relates to a method for the remediation and processing of demolition material containing pollutant-containing mineral components, wherein the method comprises the following steps: breaking up the demolition material to separate the pollutant-containing mineral components; dry or wet classifying the broken-up demolition material to separate at least one fraction from it; wet sorting the separated fraction to separate it into a pollutant-free mineral part and a pollutant-containing part, wherein in the wet sorting step the separated fraction is placed in a flowing liquid to separate pollutant-free mineral and pollutant-containing components of the separated fraction according to density, and thus to obtain the pollutant-free mineral part and the pollutant-containing part from the separated fraction.Another aspect of the invention relates to a system for the remediation and processing of demolition material containing pollutant-laden mineral components. These pollutants can include, for example, asbestos or radioactive contaminants.

The invention belongs to the technical field of mineral separation, and particularly relates to an intelligent separation system and method for fluorite upgrading. The system comprises an ore online detection unit, an intelligent decision center, a medium density dynamic regulation and control unit and a sorting execution and product collection unit. The ore online detection unit collects multi-dimensional physical characteristic data, the intelligent decision-making center calculates the optimal separation medium density through a deep neural network model, the medium density dynamic regulation and control unit accurately regulates the medium density, and the separation execution unit completes separation and collects products. The system adopts a multi-level control framework, has a model self-updating mechanism, can adapt to ore characteristic fluctuation in real time, solves the problems of low efficiency and unstable concentrate grade of traditional fixed density separation, and improves the separation precision, the resource recovery rate and the concentrate grade stability.

The invention provides a method for synchronously extracting and quantifying micro-plastics and tire abrasives in sludge and application of the method, and belongs to the technical field of residual sludge pollution monitoring. The method comprises the following steps: firstly, freeze-drying and grinding the excess sludge, pre-oxidizing by using a hydrogen peroxide solution to destroy aggregates formed among MPs and TWP, clay, sand and other substances, and then heating to remove the hydrogen peroxide solution; and the residual hydrogen peroxide solution in the pre-oxidation process is prevented from being continuously decomposed in the subsequent density separation process to generate bubbles for jacking impurities to float upwards. A saturated sodium bromide solution and a saturated sodium iodide solution are adopted as flotation reagents for primary density separation and secondary density separation correspondingly, it is guaranteed that MPs and TWP with different densities are separated, impurities are removed through Fenton oxidation digestion, and interference on recognition of specific thermal cracking products of MPs and TWP is reduced. The method provided by the invention can quickly and accurately evaluate the mass concentration pollution status of MPs and TWP in the excess sludge.

The invention provides a method for separating tantalum-niobium smelting slag. The method comprises the following steps of water leaching pretreatment, screening classification, cassiterite reselection and enrichment and high-strength magnetic separation of rare earth. Wherein in the water leaching pretreatment, tantalum-niobium smelting slag and water are mixed according to the liquid-solid ratio of (1-7): 1, stirring is performed at the temperature of 0-30 DEG C, and water leaching slag and filtrate are obtained through separation; and the particle size of the screening and grading is 38-74 microns. Soluble impurities are fully dissolved and separated through low-temperature water leaching, and interference of the soluble impurities on the follow-up sorting effect is avoided; the materials are split according to particle size differences in the screening and grading process, so that the coarse and fine particle materials are matched with optimal gravity separation equipment respectively, and density separation of cassiterite and rare earth ore can be achieved more easily; cassiterite extraction is achieved by means of density difference during reselection and enrichment of cassiterite, rare earth ore is accurately separated through high-strength magnetic separation by means of magnetic difference, and separation of all processes is more sufficient. In addition, the separation method is a physical beneficiation method and is low in cost, simple, environmentally friendly and friendly to the environment.

The options for the modular concentration bowl of the centrifugal concentrator and the options for the method of its manufacture relate to devices designed for mineral dressing, and can be used to separate solid particles by density. As an example, the claimed invention can be used for processing auriferous ores and finely dispersed sands as well as copper and nickel ores that are not amenable to magnetic separation. The objective of the claimed invention is to create a device for gravitational separation of ores with a long service lifetime and convenient in service as well as to develop a method for its manufacture. The technical result of the claimed invention with respect to the device and method is an increase in the service lifetime of the concentration bowl, its maintainability, reliability of the device and ease of manufacture.

The invention discloses a freeze crystallisation and separation method including arrangement therefore which includes the steps of selective temperature regulation to foster the growth of water ice and salt crystals, segregated by their density and wherein ice crystals float, while salt / mineral crystals sink after mixed slurry was deposited at the lower end of the tank and internal filtration pipes places to filter brine and Low TDS (total dissolved solids) water preventing crystals entering the flow; and of multi-function tank (MFT) separation incorporating a heat recovery mechanism using compressor discharge gas to melt the ice, optimising energy efficiency and reducing overall power consumption. Inlet brine flow is controlled by measurement of Low TDS water extraction quality to control the Low TDS water floating level and subsequent brine layers. The outlet brine or concentrate and solid slurry discharge is controlled based on the fraction of the Low TDS water outlet volume.

1. Name of the designed product: Sealer and its main body of gradient dispenser. 2. Overall use of the product: The designed product is used as a tube sealer or heat sealer of a gradient dispenser. Gradient dispenser is a laboratory instrument used to create and dispense density gradient for sample separation and purification. The gradient dispenser is configured to automate a gradient containing reagents of different densities for a centrifugation process to separate sample components according to their different densities. The designed product is used to seal the container (e.g. test tube) after the gradient is dispensed into the container. Partial use of the product: The partial design of claim 2, 3, 4 is used as the main body of the sealer. 3. Design points of the designed product: The shape of the solid line shown in each view. 4. Picture or photo that best shows the design points: The perspective view of claim 1. 5. Claim 1 is designated as the base design. 6. Other circumstances that need to be explained: The dotted line in each view is shown for illustration purposes and does not constitute part of the claimed design of this design application. The dashed line in each view represents the boundary between the claimed part and other parts.

The invention relates to a low-grade copper-sulfur ore pre-concentration waste-throwing device and process, and belongs to the technical field of low-grade copper-sulfur ore pre-concentration waste-throwing equipment.The low-grade copper-sulfur ore pre-concentration waste-throwing device comprises a supporting frame, an L-shaped flow guide cylinder used for flow guide is fixedly installed on the top face of the supporting frame, and an L-shaped partition plate used for partition is fixedly installed at the center of the interior of the L-shaped flow guide cylinder; water flow is additionally conveyed to the bottoms of the sieve plates, the water flow on the lower portion scours, direct friction of particles is reduced, then abrasion of the sieve plates can be reduced, the water flow can loosen a bed layer, separation of light particles and heavy particles according to density is promoted, and the sorting precision is improved; gas can be correspondingly conveyed, the conveyed gas can accelerate upward penetration of water flow, strengthen loosening of a bed layer and promote settling and falling of heavy particles, the conveyed gas pressure shares power loads of part of structures, and the service life of the structures in the device is prolonged.

A refinement process to reclaim aggregates derived from municipal solid waste incineration (MSWI) bottom ash is tailored for use in the asphalt and cement industries. Initial size reduction achieves market-specific gradation to liberate fused particles, followed by magnetic separation for the recovery of ferrous and non-ferrous metals. The aggregate material undergoes density separation to remove organic contaminants and heavy metal-bearing particles across size-specific fractions. Finally, a targeted wash cycle using neutral pH water reduces the chloride concentrations of the final aggregate product. This multi-stage process produces a reclaimed aggregate with controlled absorption, loss on ignition, and contaminant levels, enabling its safe and effective use in encapsulated construction applications.

The invention is applicable to the technical field of super-clean coal preparation, and provides a process method for preparing super-clean coal through physical-chemical synergistic separation, which comprises the following steps: by taking fine-grain low-ash clean coal as a raw material and an acid solution as a dense medium, mixing and stirring the fine-ground clean coal and the acid solution to dissolve soluble inorganic minerals, thereby obtaining the super-clean coal. Adding water or an acidic solution to adjust the liquid density, then putting into a dense medium cyclone or a centrifugal machine to separate, separating pure coal particles from inorganic mineral particles which are not dissolved by acid in the coal according to the density, and filtering and washing an upper-layer material to obtain the super-clean coal. According to the method, non-siliceous inorganic minerals in the coal are dissolved by using conventional acid, silicon-containing minerals which are difficult to dissolve by using acid are also fully dissociated from organic components of the coal, and the coal with light density and the coal with heavy density are settled and layered by using the density of the solution according to the density difference between the coal with light density and the coal with heavy density, so that the ash content of the ultra-pure coal can be reduced to 0.5% or below.

The present application belongs to the technical field of mineral separation, and particularly relates to an intelligent separation system and method for upgrading of fluorite. The system comprises an ore online detection unit, an intelligent decision center, a medium density dynamic regulation unit and a separation execution and product collection unit. The ore online detection unit collects multi-dimensional physical property data, the intelligent decision center calculates the optimal separation medium density through a deep neural network model, the medium density dynamic regulation unit accurately adjusts the medium density, and the separation execution unit completes the separation and collects the products. The system adopts a multi-level control architecture and has a model self-updating mechanism, can adapt to fluctuations in ore properties in real time, and solves the problems of low efficiency and unstable concentrate grade in traditional fixed density separation, and improves the separation precision, resource recovery rate and stability of concentrate grade.