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At present, the domestic wet zinc smelting mainly adopts the roasting-leaching-electrowinning production process, and the zinc content in the acid leaching residue is generally 8-15%, some up to 20%, and the sulfur mass fraction is 6-12%, of which sulfuric acid The root mass fraction is 15-30%, mainly in the form of 0^0 4 (in this ammoniatic environment, the leaching rate of sulfate leaching in multiple stages can reach 70%). The zinc in the acid leaching residue is mainly in the form of ZnFe 2 0 4 . In order to recover these zinc, the treatment methods are currently available in the fire method and the wet method. The fire method is the rotary kiln evaporation method (Wilz method) and the fumigating furnace evaporation method. . The wet method has hot acid leaching or high temperature pressure leaching. The fire treatment process is long, the equipment maintenance is large, the investment is high, the working environment is poor, and a large amount of coal or metallurgical coking coal is consumed, which has low efficiency and large environmental pollution. Therefore, it is usually leached by hot acid or high-pressure leaching. These methods still have the disadvantages of: 1 consumption of a large amount of acid, low leaching rate, due to the large amount of calcium sulfate, calcium sulphate and other ultrafine particles to isolate the zinc oxide particles, resulting in Electrolytic zinc enterprises are difficult to leach in acid environment, and the second weak acid leaching is not meaningful because the recovery rate is too low. 2 If leached with strong acid, although ZnFe 2 0 4 is destroyed, the leaching rate is improved, but the iron leaching rate is also high (up to 60%). The pressure of iron removal is large, and more reagents are consumed. 3 High temperature and high pressure equipment is corroded. Serious, complicated equipment investment; 4 high operating costs, poor economic returns. 5 The last slag discharged is acid leaching residue, which brings new pollution to the environment. It has to be cured and landfilled, which not only pollutes the environment, but also wastes resources.

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  • En conclusion, les grilles de sol en métal constituent un choix judicieux pour ceux qui recherchent une solution à la fois fonctionnelle, durable et esthétique. Que ce soit pour une utilisation industrielle ou résidentielle, investir dans des grilles de sol en métal est une décision qui saura répondre aux attentes les plus exigeantes tout en ajoutant une valeur esthétique à l'espace.


  • Innovations in Metal Mesh Gratings


  • Importance of Trench Drain Grates


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  • 4. Safety Regulations Compliance with local building codes and safety regulations is another critical factor. These regulations often specify minimum thickness standards based on the application, particularly in public areas where safety is paramount.


  • - लचीलापन इन्हें विभिन्न अनुप्रयोगों के लिए अनुकूलित किया जा सकता है, जिससे वे विभिन्न आवश्यकताओं के लिए उपयुक्त बन सकते हैं।


  • While the oil and gas industry is the primary focus of shale shaker screen mesh applications, its versatility has led to its adoption in other sectors where similar separation and filtration processes are required.

  • Ngoài ra, bậc thang rãnh răng còn rất dễ dàng để lắp đặt và bảo trì. Chúng có thể được thiết kế để phù hợp với nhiều kích thước và hình dáng khác nhau của bậc thang, từ bậc thang trong nhà đến bậc thang ngoài trời. Hơn nữa, các bậc thang này thường có tuổi thọ cao và khả năng chống ăn mòn, giúp tiết kiệm chi phí bảo trì trong thời gian dài.


  • What is Grating?


  • Lopuksi, galvanoidut teräksiset ritilät tarjoavat erinomaisen yhdistelmän kestävyydestä, turvallisuudesta ja taloudellisuudesta. Olipa kyseessä teollinen käyttö tai rakennusprojekti, niiden monipuolisuus ja pitkä käyttöikä tekevät niistä ensisijaisen valinnan. Tekniikan kehittymisen myötä galvanoidut teräksiset ritilät tulevat varmasti jatkamaan suosionsa kasvua ja löytämään uusia sovelluksia eri aloilla.


  • Le collage de sol, connu sous le nom de grillage de sol en français, est un élément essentiel dans de nombreux environnements, qu'ils soient industriels, commerciaux ou résidentiels. Ce type de revêtement offre une combinaison unique de durabilité, de sécurité et d'esthétique, ce qui le rend idéal pour diverses applications.