Industrija livarne je tudi nerazdružljiva od silicijevega peska . po mineralni sestavki surovega peska je livarski pesek razdeljen na pesek na osnovi kremena in pesek, ki temelji types of natural silica sand and artificial silica sand. Foundry natural silica sand is the most basic, largest, and most important raw and auxiliary material for casting in the casting process. Silica sands have large reserves on the surface of the earth''s crust, are convenient and economical and practical for mining, and are widely used at home and abroad. According to statistics, my country''s silica sand ore mining and processing enterprises are more than 30O. At present, the total amount of castings in my country has reached nearly 50 million tons, of which about 70% adopts sand casting process, and the main raw material for sand casting process modeling is silica sand. The annual consumption of new sand in the foundry industry in my country is more than 200,000 tons, and the amount of recycled sand exceeds 200 million tons. The natural siliceous sand ore resources in our country are relatively rich, which can fully meet the needs of the domestic foundry market. Casting production has strict requirements on the quality of silica sand (including composition, angle coefficient, surface cleanliness, mud content, reusability, particle Velikost in gradacija in drugi tehnični kazalniki) . Država je oblikovala tudi ustrezne standarde za vlivanje silicijevega peska . Zaporedne reforme procesa vlivanja so izboljšale stopnjo proizvodnega procesa silicijevega peska, ki se uporablja za vlivanje, in tudi promovirala stalno nadgradnjo in transformacijo proizvodne opreme {23} {23} {23} {23} {23} {23} {23}. structure has been improved day by day, and the production efficiency has been continuously improved. The production of silica sand has been semi-mechanized to mechanization and partial automation. The production efficiency of each production line has increased from 20 tons per hour to 40-50 The annual production capacity can reach more than 200,000 tons per ton hour (the northern part has only 6 mesecev proizvodnje na leto) . Na tej stopnji, glede na število podjetij za proizvodnjo silicijevega peska ali skupne proizvodnje, je severno od moje države pokazal stalen trend navzgor, medtem ko je Jug pokazal znaten upad; Z vidika splošnega položaja ponudbe in povpraševanja ponudba navadnega silicijevega peska presega povpraševanje, in obstaja razkorak v visokokakovostnem silicijevem peskom, zlasti visoki čisti in ultra-namestitveni silosi so tesno ceno in so v zadnjih letih primanjkovane {{36}, ki so v zadnjih letih razvijali svoje naložbe in se povečajo, da so se naložbene spremembe v proizvodnji raw peska v moji državi povečale in se povečale, da so se naložbe v proizvodnji raw peska v moji državi povečale in se povečale, da so bile naložbene sprememb v proizvodnji raw peska v moji državi. Enterprise . Sorte proizvodnje postajajo vse bolj raznolike . pralni pesek, pralni pesek, izbrani pesek, prevlečen pesek itd.
With the development of the globalization of the casting market, the competition in the casting industry is becoming increasingly fierce, and higher requirements are put forward for the quality, light weight, and refinement of castings. It is necessary to widely adopt various new near-net precision forming processes. Sand performance puts forward higher requirements. At the same time, it also increases the difficulty of mining, processing and processing silica sand, especially the country has put forward higher and higher requirements for environmental protection in terms of achieving sustainable development. Selecting high-quality silica sand, attaching importance to recycling, and comprehensive utilization of high-quality resources are the best choice to achieve green casting. In the future, foundry sand enterprises should start from the following aspects to rationally develop and utilize Kakovostni naravni viri silicijevega peska:
1. Prilagodite industrijsko strukturo silicijevega peska in pospešite industrijsko transformacijo in nadgradite . osredotočenost na reševanje pojava nizke industrijske koncentracije, velikega števila proizvodnih podjetij, majhnega obsega, nizkega izhoda, neurejenega rudarjenja in zlobnega konkurence . "majhnega kaosa"; Osredotočite se na spodbujanje skupne reorganizacije za uresničitev industrijske modernizacije, intenziviranja, obsežne, standardizacije in ekološkemu .
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