8 results about "Mineral dust" patented technology

The invention provides a sand and dust scene atmosphere pollution source identification method and system, computer equipment and a medium, and belongs to the field of environmental pollution analys.The method comprises the steps that the types of volatile organic compounds and the types of fine particulate matter PM2.5 in the atmosphere of a sand and dust scene to be identified in a target area are identified, and the concentration of the volatile organic compounds and the concentration of the fine particulate matter PM2.5 are measured; carrying out mineral dust proportion calculation on the types of the fine particulate matters PM2.5 and the concentration of the fine particulate matters PM2.5 to obtain a mineral dust quantification result, and determining a dust source contribution weight according to the active metal increment in the mineral dust quantification result; and performing positive matrix decomposition prediction on the types of the volatile organic compounds, the concentration of the volatile organic compounds, the types of the fine particulate matters PM2.5 and the concentration of the fine particulate matters PM2.5 based on the dust source contribution weight, and determining the pollution source contribution proportion of the atmosphere of the sand and dust scene to be identified. According to the method, the accuracy of pollution source identification is guaranteed, and a basic guarantee is provided for subsequent pollution source treatment.

The utility model relates to a dust falling device for mineral aggregate conveying, which relates to the technical field of mineral aggregate conveying and dust falling and comprises a conveying groove, a material cavity is arranged in the conveying groove, a feeding hopper is arranged at the top of one end of the conveying groove, a discharging hopper is arranged at the bottom of the other end of the conveying groove, a rotating roller is rotatably arranged in the material cavity, and spiral blades are mounted on the outer wall of the rotating roller. A plurality of ventilation openings are formed in the top of the conveying groove, a frame is installed on the periphery of each ventilation opening, fan blades are rotationally installed on the tops of the frames, a plurality of dust outlet holes are formed in the bottom of the conveying groove, an isolation hood is arranged on the peripheries of the dust outlet holes, and a box body is connected to the bottom of the isolation hood in a fastened mode. According to the mineral aggregate dust recovery device, dust adsorbed on the surface of mineral aggregate can be prevented from diffusing to the external environment, the body health of operators is protected, meanwhile, conveying equipment can be protected, it is ensured that the production efficiency is within a set range, the recovery rate of the mineral aggregate dust is increased, and the operation cost is reduced.

The invention relates to the technical field of preparation of environment-friendly dust suppressants, in particular to an intelligent preparation method of an environment-friendly coal and mineral dust suppressant, which comprises the following steps: preparing preparation raw materials, adding hydroxypropyl guar gum into deionized water according to a preset adding rate, and stirring uniformly; dynamically capturing image data at a foam generation moment in a stirring process in real time, and determining a light transmittance detection time point based on a foam coverage rate and a foam stability degree; determining the dissolution completion time point of the hydroxypropyl guar gum based on the fluctuation attenuation factor of the light transmittance; based on the dissolution efficiency, determining the adding rate of subsequently added raw materials; automatically adding an acid-base regulator to regulate the pH value of the solution system, collecting the viscosity, light transmittance and pH value data of the solution, and judging that the reaction is completed when the index data does not have abnormal fluctuation; and filtering the reacted solution through a precise filtering device to obtain the dust suppressant.

This invention discloses an energy-saving permanent magnet motor for new energy mining equipment, relating to the field of motor technology. The motor includes a body with an external shovel mechanism for removing soil. The shovel mechanism has an impact mechanism on its side to reduce soil adhesion. Inside the shovel mechanism is a rotation mechanism that accelerates the removed soil away from the body. The shovel mechanism also has a deflection mechanism that blows the removed soil away from the body. The shovel mechanism includes a mounting ring fixedly connected to the outside of the body, with support rods symmetrically fixed to the outside of the mounting ring. By incorporating the shovel mechanism, a scraper can be embedded in the gaps between the heat sink fins and reciprocate axially under the drive of a reciprocating screw and a moving plate. This removes the dense heat insulation layer formed by the mixing of mineral dust and moisture, preventing deformation or damage to the heat sink fins due to localized stress concentration, restoring the thermal conductivity of the motor casing, and ensuring the thermal stability of the motor during long-term operation.

The invention relates to the technical field of rotary kiln combustion, in particular to a low-calorific-value coal calcining rotary kiln which comprises a base and a kiln body, the base is provided with a feeding end and a discharging end, the feeding end and the discharging end are arranged at the two ends of the kiln body respectively, the base is provided with a supporting structure matched with the kiln body, and the supporting structure is arranged on the base. The base is further provided with a driving structure matched with the kiln body, and the flue is connected with a purification device. The purification device comprises a filtering mechanism and a catalysis mechanism, an air pump is fixedly arranged on the purification device, the input end of the air pump is communicated with the interior of the purification device, and the filtering mechanism and the catalysis mechanism are arranged in the purification device to carry out feeding and catalysis treatment on waste gas generated by combustion of the rotary kiln. Particulate matters, heavy metals and mineral dust in the waste gas are filtered out, and sulfur dioxide and nitrogen oxides generated during combustion are subjected to catalytic reaction, so that harmless treatment is realized.

The application discloses an environment-friendly phosphor tailing ground mineral powder collecting device, and belongs to the technical field of mineral powder collecting devices. The device comprises a ring-shaped conveying belt, a driving device for driving the conveying belt to move, a plurality of through holes are arranged on the surface of the conveying belt, a dust suction pipe is slidably arranged in the through holes, a dust suction hole is formed on the surface of the dust suction pipe, the outer end of the dust suction pipe extends out of the through hole, the inner end of the dust suction pipe is communicated with a suction chamber, the suction chamber is fixed to the inner side of the conveying belt, adjacent two suction chambers are connected through a pipeline, at least one suction chamber is connected with a negative pressure suction device through an air inlet pipe; the driving device comprises a driving roller, a driven roller and a motor, the output end of the motor is connected to the driving roller, the outer side of the driving roller and the driven roller is uniformly and interval distributed with a top tooth along the circumference, and a tooth groove for giving way to the suction chamber is formed between adjacent two top teeth. The device can effectively treat the mineral dust in the mineral powder collecting process and improve the dust removal efficiency.

This utility model relates to the fields of non-ferrous metal smelting and chemical technology, and discloses a water-cleaning blade flue gas dust collector, comprising: a dust collection tower body, which is tank-shaped; a dust collection structure, which includes a first dust collection section and a second dust collection section. The first dust collection section includes blade flue gas dust collectors fixedly installed on the inner wall of the dust collection tower body. The outer wall of the dust collection tower is fixedly installed inside the blade flue gas dust collectors. An inner fixing ring is fixedly installed on the inner wall of the outer wall of the dust collection tower. Seven sets of horizontal support rods and five sets of vertical support rods are arranged inside the outer wall of the dust collection tower. Four sets of dust collector blades are arranged between the seven sets of horizontal support rods and the five sets of vertical support rods. The device can throw mineral dust and heavy metal polymers in the flue gas onto the blades and circumference, and clean the blades by spraying, thereby treating the mineral dust and aggregates in the flue gas, reducing the possibility of device damage, and improving the safety of device use.

The invention discloses environment-friendly mineral powder collecting equipment for a phosphate tailing ground, and belongs to the technical field of mineral powder collecting equipment.The environment-friendly mineral powder collecting equipment comprises an annular conveying belt and driving equipment for driving the conveying belt to convey, a plurality of through holes are formed in the surface of the conveying belt in an array mode, dust suction pipes are arranged in the through holes in a sliding mode, and dust suction holes are formed in the surfaces of the dust suction pipes; the outer ends of the dust suction pipes extend out of the through holes, the inner ends of the dust suction pipes communicate with air suction bins, the air suction bins are fixed to the inner side of the conveying belt, every two adjacent air suction bins are connected through a pipeline, and at least one air suction bin is connected with negative pressure air suction equipment through an air inlet pipe. The driving device comprises a driving roller, a driven roller and a motor, the output end of the motor is connected to the driving roller, top teeth are evenly distributed on the outer side of the driving roller and the outer side of the driven roller in the circumferential direction at intervals, and a tooth groove used for giving way to the air suction bin is formed between every two adjacent top teeth. The equipment can effectively treat mineral dust in the mineral powder collecting process, and the dust removal efficiency is improved.