Sampling construction
During the sampling and construction process, the following items should be noted: (1) The actual position of the sampling should be consistent with the position of the sampling design arrangement. The weight of the sample sample at each sampling point should be basically consistent with the sampling design weight. During the sampling construction and processing of the ore sample, any impurities should be prevented from being mixed into the ore sample. The ore samples collected at each sampling point should be piled separately, no mixing is allowed, and no loss of the ore sample is allowed. (2) In order to make the scaled ore sample fully representative of the mined sample, the sample processing should be carried out according to the procedure (crushing, sieving, mixing, shrinking). The weight of the sample after shrinking must be greater than (or Equal to the weight calculated by the formula Q=Kd 2 . (3) Verification and adjustment of the mine sample position. It should be checked whether the sample position of the mined ore is consistent with the sample position of the sampling design. If the difference is not large, the weight can be reduced and weighed according to the weight required by each sampling point; if the difference is large, the sampling should be properly adjusted. Take the weight of the ore sample, or select another point in the same grade interval, or add a small number of sampling points until the sampling requirements are met. (4) Packaging and transportation of mineral samples. The ore samples tested in the laboratory shall be packaged separately according to different sampling points (or different ore types, different industrial grades and different grades). The sample must be packed firmly to prevent leakage, moisture and easy handling. The instruction cards and the total sample delivery form inside and outside the package of each sample must be clearly filled out. The content of the sample description card should include the type, number, sampling location and actual weight of the sample. Write the number outside the box to facilitate identification. After the ore sample is packaged and checked before shipment, it shall be inspected and checked, and then sent along with the sampling method to send the test sample to the test unit. Except for the removed ore samples, the remaining ore samples should be stacked separately according to the sampling points and kept properly for use as a secondary sample. PVC processing additive ACR is a commonly used additive widely used in the production process of PVC products. ACR, also known as acrylic ester copolymer, is a polymer compound with excellent plasticity and stability. ACR, as a plasticizer, can significantly improve the flexibility and ductility of PVC products. During the processing of PVC, ACR can be compatible with PVC resin, forming a uniform mixing system, making the PVC material softer and easier to process. In addition, ACR can also reduce the glass transition temperature of PVC, improve the cold resistance of PVC products, and maintain good softness in low temperature environments. ACR, as a PVC processing aid, is widely used in fields such as plastic products, pipes, wires and cables, and flooring. It can be adjusted according to different needs to meet the requirements of different products. When using ACR, it is necessary to determine the dosage based on the specific processing technology and usage requirements to ensure the best plasticizing effect and product quality. acrylates copolymer,Processing Additive ACR,plasticizer Hebei Xiongfa New materials Technology Development Co.,LTD , https://www.xiongfa-tech.com