Raw khoom rau kev lag luam - dawb quartz xuab zeb

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Yuav ua li cas tej txuj ci tseem ceeb uas tsis tau npaj rau lub ntiaj teb rau txiv neej! Ntawm no, piv txwv li, yog ib qho amazing pom - xuab zeb dawb. Los ntawm qhov deb, koj yuav tsis nkag siab tam sim ntawd: nws puas yog snowdrifts nyob rau hauv nruab nrab ntawm lub caij ntuj sov, los yog roob ntawm granulated qab zib, los yog tej zaum lub rooj ntsev los yog lwm yam tshuaj? Thiab tsuas yog nce mus, noj nws hauv xib teg ntawm koj txhais tes thiab sawv los ntawm koj cov ntiv tes, koj nkag siab tias qhov no yog xuab zeb dawb, daim duab uas tau muab rau hauv tsab xov xwm no. Thiab nws muaj quartz - ib qho ntxhia hauv ntiaj teb. Quartz muaj nyob rau hauv cov ntxhia muaj pes tsawg leeg ntawm oligomictic thiab polymictic xuab zeb uas ua rau cov suab puam dunes, dunes ntawm hiav txwv coasts, thiab shoals ntawm dej lub cev.

Natural white sand

Cov pob zeb quartz muaj nyob hauv hav dej. Dawb dej xuab zeb yog qhov purest, nws feem ntau tsis muaj kuab paug, nrog rau roob quartz xuab zeb, weathered vein outcrops. Nws yog qhov zoo tshaj plaws los nrhiav nuggets ntawm cov hlau muaj txiaj ntsig lossis lawv cov zaub mov hauv cov pob zeb ntawm ntuj quartz xuab zeb. Muaj cov xuab zeb dawb faus rau hauv cov khaubncaws sab nraud povtseg ntawm lwm cov pob zeb sedimentary thiab mined hauv cov chaw txua txiag zeb. Nws feem ntau muaj cov pa phem nyob rau hauv daim ntawv ntawm ib tug admixture ntawm av nplaum, xuab zeb loams,loams, polymictic sands, uas pom nyob rau hauv lub thickness ntawm quartz xuab zeb nyob rau hauv daim ntawv ntawm interlayers thiab lo ntsiab muag.

Tsim ntuj tsim thiab tib neeg txhais tes

Cov xuab zeb dawb, muaj li ntawm 90-95% quartz, tsis yog li ntawd thiab muaj txiaj ntsig zoo li cov khoom siv raw rau ntau qhov kev lag luam. Qhov tsis muaj cov xuab zeb ntuj tuaj yeem sau tau - kom tau txais cov xuab zeb dag quartz siv crushing thiab tshuaj ntsuam cov cuab yeej. Rau zus tau tej cov xuab zeb, monolithic blocks ntawm milky-dawb quartz yog siv, crushing uas thiab sifting lub puas pob zeb, xuab zeb yog tau nrog tej yam thiab xav tau qhov ntau thiab tsawg (feem feem) ntawm hais. Artificial xuab zeb sib txawv ntawm cov xuab zeb ntuj nyob rau hauv tshwj xeeb monomineralism, ntse-angled nplej ntawm xuab zeb.

Qhov twg siv quartz xuab zeb

xuab zeb dawb yog siv los ua iav. Cov kev cai hauv qab no yog tsim rau nws: 95% ntawm nws muaj quartz, nws yuav tsum yog nruab nrab-grained (grain txoj kab uas hla 0.25-0.5 mm), tsis muaj admixture ntawm cov tshuaj uas yog sparingly soluble nyob rau hauv lub khob loj, tsis muaj teeb meem impurities ntawm minerals. hlau, chromium, titanium (lawv xim lub khob thiab ua kom nws lub teeb nqus). Cov iav xuab zeb zoo yog ib qho uas yog 98.5% quartz thiab tsis muaj ntau tshaj 0.1% hlau oxide.

Quartz iav yog xav tau rau kev tsim cov tshuaj iav iav, hauv kev ntsuas ntsuas - nws tuaj yeem tiv taus qhov kub thiab txias. Rau pwm thiab cores nyob rau hauv lub foundryHauv kev tsim cov ferrous thiab non-ferrous hlau, quartz xuab zeb kuj tseem siv, uas yog hu ua molding xuab zeb hauv metallurgy. Qhov zoo ntawm cov xuab zeb no yog txiav txim siab los ntawm nws cov granulometric muaj pes tsawg leeg thiab cov duab ntawm cov khoom uas cuam tshuam rau cov pa permeability, thiab tus nqi ntawm impurities uas txo cov refractoriness ntawm cov xuab zeb. Nws yog ib qho tsim nyog kom cov xuab zeb tsis muaj cov ntxhia hauv cov ntsiab lus siab ntawm sulfur thiab phosphorus, uas ua rau muaj kev phom sij rau cov hlau casting. Quartz xuab zeb yog siv rau kev sib tsoo log thiab "sandpaper" - rau cov xuab zeb no yog melted nrog graphite thiab carborundum yog tau, thib ob tsuas yog pob zeb diamond hauv hardness. Qhov tshwj xeeb av tuav peev (sorption peev) ntawm quartz xuab zeb yog siv hauv cov lim dej kom huv los ntawm cov hlau thiab manganese oxides. Cov xuab zeb no yog siv rau hauv kev tsim kho rau plastering nto thiab rau zus tau tej cov panels, pob zeb ua vaj tse. Siv hauv kev tsim toj roob hauv pes. Thiab txawm tias kas fes sov rau hauv cov khoom noj sov uas muaj cov xuab zeb dawb quartz yuav zoo siab rau koj nrog nws cov tsw qab.