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 Wysłany: Śro 10:09, 05 Sty 2011 Temat postu: ugg stivali Xupu Development and application of sa |
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Xupu Development and application of sand sand
Pu County, sandstone sand broken by sandstone is a kind of sedimentary rock made of silica sand, silica sand particles by the deposition of solid by pressure, cementation from the bond is weak, easily broken and restore the natural sandstone sand grain size, and then after a series can be processed silica sand for foundry is shown in Figure 1, silica sand processing flow chart of a factory. Figure l2 flesh caught 2 sand sand processing flow chart of performance of 2.1 Xupu sand mineral composition of sandstone in Table 1 shows the mineral composition of ore Xupu sand. Can be seen, Shu Pu sand SiO: content close to 99. And low levels of harmful metal oxides, refractoriness 1700 \Especially suitable for production of steel casting sand table l Xiang Pu ore mineral composition and refractoriness s] o2 () lAlcOa () lFe! O3 () lcr3 () lTiO '%) resistant to nine hole (℃) 98.481o65l0O82lo00054l005317002.2 scale distribution and clay particles 2 shows the Shu Pu sand particle size distribution after crushing ore and clay content can be seen in about 7O broken ore concentrated in the 40 ~ 100 mesh sieve. The multi-stage scrubbing, washing, screening, magnetic separation treatment, the distribution will be more concentrated, micro-content were greatly reduced. National standard character sets can be processed out of a series of silica sand casting, ore utilization rate of 95. In addition, the user's requirements can be produced for the size of the casting special silica sand. Table 2 The size distribution of crushed ore and the amount of 484125108451412514955855 TCC residue () l-1.1.1. 【. II. 1.1. Occupy the volume () l0.122.3 grain shape, grain appearance assessment evaluation of a silica sand particle shape in two ways First,[link widoczny dla zalogowanych], the angular coefficient of determination of silica sand, and second, microscopic observations and photographs. The former is more objective, accurate} which is more intuitive, but with a clear subjective. In order to better assess Xupu sand particle shape, the paper also uses two methods. Table 3 shows the number of commodities for silica sand and sandstone sand Xupu angular coefficient is shown in Figure 2 Dalin standard sand and sand sandstone morphology Xupu photos can be seen from Figure 2, Shu Pu sandstone were round or oval-shaped sand , the surface of light refined, slightly smaller than a few commodities Dalin Tables 3 and Xiang Pu silica sand sand sand angular coefficient of the standard in Figure 2 (a), Shu-catching sand (b) quasi-sand grain shape photo. This is shown in Table 3, the angular coefficient coincided. 3 Sandstone Sand Casting Xupu feasibility of applying the table shows that 4,5,6 few commodities as sand silica sand and coated sand Xupu sandstone, furosemide feeding resin sand, water glass sand organic esters compared the performance of the original sand . We know that Xupu coated sand sand sand overall performance even better than the standard sand, sand next to Hainan; its Furan Resin Sand 24h, although slightly lower than the tensile strength of standard sand, but few commodities of the original sand than other anti- tensile strength are better; its organic ester sodium silicate sand compressive strength lower than the standard sand 24h, and close to Changsha, sand,[link widoczny dla zalogowanych], silica sand than several other,[link widoczny dla zalogowanych], indicating that it is an ideal organic ester silicate sand with silica sand. Table 4,[link widoczny dla zalogowanych], silica sand, and turned several pump sand sand sand Xinjiang membrane performance test conditions the amount of resin added, Jinchu Eagle and production conditions are the same process. Table 5 and Xiang Pu several silica sand sand sand sand furosemide _b performance of the tree looking compressive strength of dried l 'MP and) l1h8h24h standard sand (5o/1oo) Jo311141.26 long copy sand '70 / 40) lo. 450 781. o8 Yueyang sand (70/40) lo. 39068O85 Duchang sand (70/40) lo25o. 72o. 88 Pu enough sand (70 / '40) lo. 28094l_l5 test conditions. YJN-V Furan Resin 12 {PTSA4oi temperature and humidity 22 ℃, 75 Table 6 Xiang Pu several silica sand and sodium silicate sand sand sand properties of organic li compressive strength (MPa) of the original 1hI8h24h standard sand (50 / '1 o0) 17212.50311 long copy sand (70/40) 1.12 【2.17246 Yueyang sand (7O, 40) 1.14I1. B92.18 Duchang sand (70/.40) 1.08l1.72l_96 pump enough sand (70/.40) 1.14l1.612.78 water glass test conditions (Cou London 2.37) 4I lO-organic alcohol Temperature and Humidity 22 ℃. Conclusion 754 Pu Shu large reserves of sandstone sand resources, convenient transportation, processing means perfect, well-equipped, the original sand siO content, grain shape, round, smooth surface,[link widoczny dla zalogowanych], in the southern region is an excellent casting silica sand resources. Sand is particularly suitable for high performance requirements of the original chemical binder for high SiO content of sand and steel casting using silica sand. \
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