3results about How to "Solve problems such as pollution" patented technology

The invention discloses a near-infrared quantitative measurement method for a PE plastic product, and belongs to the technical field of plastic product detection. The manufacturing method comprises the following steps: determining a basic PE plastic ingredient proportion, designing a gradient standard sample formula, weighing raw materials, mixing, filling a mold, heating, fusing, curing and post-processing to obtain the standard sample. The method for establishing the measurement model comprises the following steps of: collecting a near infrared spectrum of a standard sample, preprocessing the near infrared spectrum, optimizing a characteristic wave band by adopting recursive characteristic elimination and principal component analysis, constructing a dynamic residual network model, and perfecting the model through accuracy optimization, generalization enhancement and mobility improvement strategies. According to the method, the problems that a traditional chemical analysis method is large in pollution, high in cost and poor in stability are solved, rapid nondestructive testing within 1-2 min is achieved, the correlation coefficient R2 of a model prediction value and a real value can reach 0.995, and the problem of measurement instability caused by raw material batch fluctuation is effectively solved.

The present application belongs to the technical field of mineral processing and environmental protection, and particularly relates to a method for removing impurity metal ions and compounds in raffinate acid. The impurity metal ions and compounds such as iron, magnesium and aluminum in the raffinate acid are selectively removed under the synergistic action of adsorption materials and flotation reagents. The method mainly uses the strong adsorption of the adsorption materials and the strong selectivity of the specific flotation reagents, and uses the adsorption materials and the flotation reagents in combination, and through adjusting and controlling the types, the ratio, the dosage of the adsorption materials and the flotation reagents, and the reaction sequence, the time and the temperature, the selective removal of the impurity metal ions and compounds in the raffinate acid is realized, and the comprehensive utilization rate of the raffinate acid is improved. The method is suitable for the purification system of the raffinate acid in the phosphorus chemical industry, and has the advantages of simple method, strong selectivity, remarkable effect and short action time, and has important significance for solving the problems of difficult disposal and reuse of the raffinate acid, high production cost of the phosphorus chemical industry and serious waste of phosphorus resources.

The utility model provides a dustproof mechanism of a field lens, which comprises a lens body, an output end of the lens body is provided with an emergent mirror surface; the output end of the lens body is sleeved with the dustproof outer cover, the emergent mirror surface is located between the dustproof outer cover and the lens body, an inner cavity is formed by the emergent mirror surface and the dustproof outer cover, an air inlet hole is formed in the outer wall of the dustproof outer cover, a through opening is formed in the middle of the dustproof outer cover, and the outer edge, facing the emergent mirror surface, of the opening extends to form a protruding structure; the bottom of the protruding structure abuts against or is close to the emergent mirror face, and an airflow gap exists between the bottom of the protruding structure and the emergent mirror face so that it can be guaranteed that airflow in the inner cavity faces the opening. The working stability of the laser equipment can be effectively improved, the service life of the laser lens, namely the lens body, is prolonged, the problems of dust light blocking, lens pollution and the like existing in the operation of the laser processing equipment are solved with relatively low cost, the emergent mirror surface of the laser lens can be kept in a clean state, and pollutants of the laser lens can be cleaned in time.