5results about How to "Improve mineralization efficiency" patented technology

This invention discloses a flotation system based on a flotation reagent modification process, relating to the field of mineral processing technology and equipment. It includes a sealed modification chamber, the upper part of which is connected to an atomizing feed device. A heating device and a baffle plate are installed inside the modification chamber. A first vacuum pump is installed at the lower part of the modification chamber and connected to a gasified reagent outlet device. The flotation separation device includes a first bubble generator, whose inlet is connected to a slurry feed device, whose air inlet is connected to the gasified reagent outlet device, and whose outlet is connected to a flotation separator. This invention solves the problems of uneven dispersion and slow action of liquid reagents, and has the advantages of reducing reagent dosage, significantly increasing the collision probability and adhesion efficiency between the reagent and the target mineral, greatly improving the overall recovery rate, strong adaptability, and broad application prospects.

The application belongs to the technical field of carbon dioxide mineralization curing concrete, and relates to a carbon dioxide mineralized concrete and carbon fixation device and method, which comprises a reaction kettle, a stirring system and a dry ice powder supply system. A rotating powder spraying arm coaxially connected with a stirring shaft is arranged in the reaction kettle, and powder spraying micropores for upward and horizontal spraying are arranged on the hollow arm body of the powder spraying arm. A flow guide groove penetrating through the upper surface and the lower surface of the stirring blade is arranged on the stirring blade, the inlet of the flow guide groove is located at the root of the upper surface of the blade, and the outlet is located at the middle of the lower surface and faces the powder spraying arm area. An adaptive baffle assembly composed of a movable baffle, a reset spring rod and a centrifugal counterweight is arranged at the inlet of the flow guide groove, which can automatically adjust the inlet opening according to the stirring speed. A cutting grid located below the powder spraying arm is further arranged in the reaction kettle. The application realizes the efficient and uniform mixing of dry ice powder and cement slurry through the space collision of rotating powder spraying and directional jet, centrifugal force adaptive adjustment and forced refinement of the cutting grid.

The application discloses a catalyst for catalyzing volatile organic compounds by using a samarium modified manganese oxide and a preparation method thereof, relates to a catalyst for organic compounds and a preparation method thereof, and discloses a samarium (Sm) modified manganese oxide catalyst and a preparation method and application thereof. 4+ The catalyst is Sm2Mn8, the Sm element is introduced by using a hydrothermal synthesis method, a Sm-O-Mn coordination structure is formed, high-density oxygen vacancies are generated, and a recyclable double-oxygen storage system is constructed. The structure stably maintains Mn , enhances oxygen migration ability and O2 activation ability, realizes low-temperature catalytic oxidation of toluene and other volatile organic compounds (VOCs), and has the advantages of high low-temperature activity, high CO2 selectivity, good water resistance and outstanding long-term stability. The catalyst has significant catalytic oxidation performance on VOCs such as toluene at low temperature, and has excellent water resistance and long-term stability.

The present application relates to a vertical mineralization reactor, system and method for preparing artificial aggregate from mineralized CO2, the reactor comprising a body provided with a shaped green body inlet, a mineralized aggregate outlet, a flue gas inlet and a tail gas outlet; a moving bed and a fixed bed are arranged in the reaction cavity, the shaped green body entering the reaction cavity passes through the moving bed and then enters the fixed bed; the moving bed comprises a plurality of inclined and staggered sieve trays, and the shaped green body moves step by step on the sieve trays. The moving bed can slow down the impact of the green body, prolong the flow path of the shaped green body and CO2, increase the gas-solid two-phase countercurrent contact time to promote the mass transfer process, and improve the product qualification rate; the fixed bed can ensure the uniformity and mechanical properties of the product. The vertical reactor can save space, and the system integrated with the reactor can realize low-cost carbon capture and utilization by directly mineralizing low-concentration flue gas CO2 from solid waste, low-temperature micro-positive pressure mineralization curing can reduce the operation energy consumption, and fresh flue gas and atomized water can improve the mineralization efficiency.

The invention relates to a bionic filling mining method for an underground metal mine. The method comprises the following steps: stoping in sections in a stope; a bionic honeycomb air bag support; carrying out gradient microorganism consolidation filling; multi-source data fusion monitoring regulation and control; and subsection filling is conducted on the secondary mining section. Firstly, a bionic hexagonal honeycomb air bag and nanometer tear-resistant coating supporting structure is adopted, a pressure-displacement dual-mode sensor is combined, supporting of the goaf is rapidly and accurately completed, and it is ensured that the supporting compressive strength meets the long-term stability requirement under the deep high-stress and strong blasting impact environment. Then the modified tailing cementing slurry, a Thermus sp gradient bacterial agent and a nano calcium carbonate crystal nucleus are synergistically mineralized, so that the mineralization time is greatly shortened, and the recovery efficiency is improved; the filling body forms a matched surrounding rock stress arch with a hard bottom and a soft top through a process of adding the microbial agent in a gradient decreasing manner from bottom to top and a layered pouring process, so that the phenomena of bottom crushing and top void are eliminated.