4results about How to "Polluted" patented technology

The invention relates to the technical field of steel plates for automobile frames, in particular to a high-toughness green clean-surface steel plate for an automobile frame and a manufacturing method of the high-toughness green clean-surface steel plate. The tensile strength reaches 450 MPa grade or above, the surface cleanliness reaches 3.0 grade, and the steel is prepared from, by weight, 0.06%-0.08% of C, 0.05%-0.15% of Si, 0.95%-1.10% of Mn, 0.015%-0.045% of Als, 0.015%-0.030% of Nb, 0.010%-0.025% of Ti, smaller than or equal to 0.020% of P, smaller than or equal to 0.010% of S and the balance Fe and inevitable impurities. The structure of the finished steel plate is composed of ferrite and pearlite. On the basis of C-Mn series steel components, a low-silicon and low-carbon component system with Nb and Ti added compositely is adopted, hot rolling process control is matched, and wet-type sand blasting descaling treatment is conducted on the surface. The anti-rust oil can be applied to manufacturing of automobile frame parts, has an obvious weight reduction effect, has high surface quality, can be kept rustless for 180 days under the condition that anti-rust oil is not used, and has the advantages of zero pollution, low cost, greenness and cleanness.

The invention relates to an environment-friendly scheelite high-entropy microwave dielectric ceramic material and a preparation method thereof, the structural expression of the ceramic material is Na0.5 (LaPrNdX) 0.5 / NMoO4, X is selected from at least two of Bi, Ce, Sm, Eu and Y, and N is the sum of the number of elements of La, Pr, Nd and X. The ceramic material simultaneously has at least five elements of La, Pr, Nd and X at one element position, high-entropy component design is realized, the dielectric property of the material can be directionally designed through component selection, the sintering temperature of the material is effectively reduced under the condition that a sintering aid is not added, and the performance of the material is improved. The microwave dielectric ceramic has a reasonable dielectric constant, a high quality factor and a near-zero temperature coefficient of resonance frequency, and shows excellent microwave dielectric properties.

The application relates to the technical field of barium element utilization in barite minerals, and specifically discloses a method for improving the utilization efficiency of barium elements in barite minerals. The method comprises the following steps: mixing crushed barite and crushed coal in a weight ratio of 1:(0.2-0.25), and then extruding and balling to obtain pellets, wherein the particle size of the pellets is 20-80 mm; the pellets are subjected to microwave roasting and crushing, the crushing product is subjected to water leaching to obtain a barium sulfide solution, and the barium residue is subjected to acid liquid dissolution and leaching, and then subjected to solid-liquid separation to obtain a barium ion solution and a residue stone. The method can significantly improve the yield of water-soluble BaS and the comprehensive utilization rate of barium elements in barite, and the process is environmentally friendly, low in pollution and high in production efficiency.

The present invention relates to the field of recycling of waste lithium batteries, and provides a lithium battery low-temperature pyrolysis system and a pyrolysis method thereof. The lithium battery low-temperature pyrolysis system comprises a pyrolysis chamber, a spiral is arranged in the pyrolysis chamber, and the two ends of the spiral are connected to two electrodes of a power source. The pyrolysis method comprises the following steps: processing the battery into battery fragments; the battery fragments enter the pyrolysis chamber, and the battery fragments are continuously transmitted by the spiral, and the two ends of the spiral are energized so that the temperature inside the pyrolysis chamber rises to 222°C2222°C, and the battery fragments are pyrolyzed. In the present application, heating is performed by heating in a manner of resistance principle, so that the pyrolysis chamber is heated rapidly in a short time, and has the advantages of being clean, environmentally friendly and pollution-free. By adjusting the rotation frequency of the spiral, the resistance of the battery fragments in the pyrolysis chamber is changed, and then the temperature inside the pyrolysis chamber is adjusted, so that the battery fragments are evenly heated, the pyrolysis temperature can be accurately controlled, the pyrolysis effect can be ensured, and the resource utilization of the battery is effectively realized.