4 results about "Screening procedures" patented technology

The utility model provides a kind of sulphuric acid residue efficient utilization sintering equipment, including sintering furnace, the side of sintering furnace is provided with screening cylinder, spiral disc is fixedly connected in the screening cylinder.The utility model has the advantages that: the inertia of sulphuric acid residue with higher iron element content is stronger, it moves to discharge plate over drop hole, and rolls to screening box along discharge plate.Start motor drives magnetic roller to rotate, sulphuric acid residue in screening box falls on magnetic roller under the action of inertia, sulphuric acid residue with more iron content relative to its mass is adsorbed and driven to rotate by magnetic roller, sulphuric acid residue with less iron content relative to its mass flows along magnetic roller to enter discharge cylinder at through hole, so that the magnetic separation of sulphuric acid residue is realized.Sulphuric acid residue with higher iron element content enters sintering furnace through material passage, and completes ironmaking work with other ironmaking raw materials.Sulphuric acid residue is automatically screened, and two screening procedures are passed, and ironmaking raw material has higher iron element content, which is conducive to improving ironmaking quality.

The utility model discloses a collagen raw material pretreatment multistage cleaning screening integrated machine, including the box, the top of box is provided with the feed inlet, the box is divided into preflushing area, high pressure sprinkling area and screening area in proper order along raw material processing flow, be provided with first conveyer in preflushing area, the top of first conveyer is arranged with preflushing pipe, be provided with second conveyer in high pressure sprinkling area, the top of second conveyer is installed with high pressure sprinkling pipe, be provided with vibration box in screening area, install multilayer vibrating screen in vibration box. Advantageous effects: the utility model discloses by with the screening procedure integration in the same equipment in cleaning procedure, raw material enters after feed inlet, can complete preflushing, high pressure sprinkling cleaning and multistage screening operation in proper order, need not manual transfer, greatly reduces manual operation, reduces labor intensity, shortens processing cycle simultaneously, improves production efficiency.

The utility model discloses a kind of ceramic frit glaze screening rejection devices, relate to ceramic frit processing technical field.The utility model includes fixed plate, the fixed plate top two sides are respectively fixedly connected with telescopic support and support rod, the telescopic support and support rod top inside are all hingedly connected with support block through pin shaft, the support block one side is fixedly connected with separation tank, the separation tank one side is provided with separation mechanism.The utility model is by being provided with first filter screen and second filter screen of different aperture in separation tank bottom, cooperate threaded conveying rod and be uniformly conveyed to material into separation tank, it is convenient to realize to the preliminary classification screening of ceramic frit glaze, effectively separate out the frit of different particle size, simultaneously, in subsequent screening component, first filter frame and second filter frame further carry out fine screening to material, multiple screening procedures are combined, greatly improve screening precision, compared with traditional single screening structure, it is convenient to more thoroughly eliminate impurity, ensure the quality of ceramic frit glaze.

This invention discloses a method for screening priority pollutants for key industry production sites. The invention uses a screening procedure based on "meta-analysis-multi-risk coupling-multi-objective decision-making" to screen pollutants requiring priority control in key industries. First, a meta-analysis is used to summarize and analyze pollutant studies of the target industries, initially screening out pollutants of high concern. Then, the soil-groundwater environmental chemical behavior analysis of these high-concern pollutants is integrated to calculate the risks to human settlement safety, drinking water safety, and ecological safety. The coupling degree of these three safety risks is calculated using a coupling coordination degree model, and the pollutants are ranked from highest to lowest to form a refined list of pollutants for the target industries. Finally, based on multi-objective decision-making recommendations from multiple parties, a list of pollutants requiring priority control is formed. This invention can more accurately identify priority pollutants in different key industry sites than existing methods, and can carry out scientific prevention and control work more efficiently from the source.