6 results about "Density separation" patented technology

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 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 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.