Sodium fluoride

Sodium fluoride,yog ib hom inorganic compound, tsuas yog siv nyob rau hauv cov txheej txheem tshuaj zoo li phos tshuaj, kev ua qoob loo rau cov ntaub ntawv ceev, kev ua haujlwm thiab lwm thaj teb.

Lub cev lub cev:Tus txheeb ze ceev yog 2.558 (41/4 ​​° C), lub melting point yog 993 ° C, thiab lub bowing taw tes yog 1695 ° C [1]. (Txheeb ze ntom 2.79, melting point 992 ° C, boiling taw tes 1704 ° C, 4.0g / 100gleMagicalbuoric acid, thiab insoluble Hauv ethanol. Cov kua aqueous yog alkaline (ph = 7.4). Toxic (Kev puas tsuaj lub paj hlwb), LD50180Mg / kg (nas, qhov ncauj), 5-10 grams tuag. Cov khoom: tsis muaj xim lossis txawm tias dawb crystalline hmoov, lossis cubic muaju, muaju zoo, tsis muaj ntxhiab.

Tshuaj lom neeg cov khoom:Muaj xim tsis muaj cov hmoov nplej ci lossis cov hmoov dawb, cov hmoov av tegroniccal, nrog cov muaju tsis tu ncua lossis octahedral muaju. Me ntsis soluble hauv cawv; Soluble hauv dej, aqueous daws yog acidic, soluble hauv hydroflluoric acid los ua cov tshuaj fluium.

Daim Ntawv Thov:

1. Nws tuaj yeem siv ntau -carbon steel, xws li huab cua-txhawb kev kho mob ntawm daim ntawv, muaj cov tshuaj tua hluav taws xob (nrog sodium fluoride thiab nitrate lossis diitol phenol rau anti -Corrosion ntawm cov khoom siv hauv paus), siv cov ntaub ntawv (tshuaj ntxuav dej, tshuaj txhuam hniav, tshuaj txhuam hniav, thiab lwm yam), Cov tshuaj txuag, thiab lwm yam.

2. Nws yog siv los tiv thaiv cov kab mob kho hniav thiab cov ntshav ntawm qhov tsis muaj tshuaj fluoride hauv dej hauv dej;

3. Cov koob tshuaj me me yog tsuas yog siv rau cov txha pob txha thiab kab mob paget;

4. Nws tuaj yeem siv los ua cov khoom siv raw lossis tshuaj fluoride ntawm lwm cov tshuaj fluoride lossis tshuaj fluoride;

5. Nws tuaj yeem siv ua UF3 adsorbent nyob rau hauv lub teeb hlau fluorine tshuaj tiv thaiv, smelting refiners, thiab nuclear kev lag luam;

6. Ntxhua cov tshuaj tua kab thiab lwm cov hlau, welded cov neeg sawv cev thiab cov tsiaj txhu;

7. Ceramics, iav thiab enamel melts thiab shading cov neeg sawv cev, tawv nqaij Raw thiab cov epidermal cov neeg sawv cev ntawm cov suab nrov kev lag luam;

8. Ua cov tshuaj phosphate nyob rau hauv kev kho cov xim dub los tswj cov tshuaj phosphoruritive thiab txhim kho kev ua haujlwm ntawm phosphorus membrane;

9. Raws li kev ntxiv nyob rau hauv kev tsim cov khoom ntim khoom thiab cov ntaub qhwv nres, nws ua lub luag haujlwm ntawm kev nce zog tsis kam;

10. Raws li cov quav ntxiv nyob rau hauv cov pob zeb ua, txhim kho lub corrosion tsis kam ntawm cov pob zeb ua.

Cov kev ceev faj:

1. Siv cov tshuaj fluorium kom nruj me ntsis tswj cov tshuaj fluorine txhua hnub los tiv thaiv cov tshuaj fluoride lom;

2. Sodium fluium fluoride daws lossis gel yuav tsum muab tso rau hauv lub thawv yas;

3. Cov poj niam cev xeeb tub, poj niam cev xeeb tub, pob txha muag, pob txha mosness thiab raum tsis ua tiav hauv cov cheeb tsam siab.

Ntim thiab Ntim

Ntim txuj:Lub hnab yas lossis ob-leeg daim ntawv mehide hnab lub hnab ntim txheej txheej fiber ntau, plywood board Barrels; Yas ris (khoom) sab nraum yas sab nraud hnab; yas chrels (kua); Ob txheej ntawm cov hnab yas lossis ib-leeg hnab yas sab nraum lub hnab, yas weaving weaving, yas weaving hnab, yas looj; Lub Hnab Yas Sib Pauv Yas Woven Hnab (polypropylene peb-lub hnab, polypropene ob-lub hnab, polyethylene ob--lub hnab); Lub hnab yas lossis ob-leeg tawv daim ntawv ntim cov hnab ntim sab nraum lub thawv ntoo zoo tib yam; Xov iav lub raj mis, hlau npog nias xovxwm iav lub raj mis, lub raj mis yas lossis hlau ntoo ntoo; Xov iav lub raj mis, lub raj mis yas lossis tin -pated nyias hlau phaj phaj, ntim tau fiber.product ntim: 25kg / hnab.

Ceev faj rau kev khaws thiab tsheb thauj mus los:Thaum lub sijhawm thauj mus los, cov khoom thauj khoom uas muaj kev phom sij ntawm cov rooj sib tham nrog cov kev cai railways 'phom sij rau cov cai thauj khoom. Ua ntej kev thauj mus los, tshuaj xyuas seb cov ntim ntim ua tiav thiab tau sib khi. Thaum lub sijhawm thauj mus los, nws yuav tsum xyuas kom meej tias lub thawv yuav tsum tsis txhob xau, poob, poob, lossis kev puas tsuaj. Nws yog nruj me ntsis txwv tsis pub sib xyaw nrog cov kua qaub, oxidant, zaub mov noj ntxiv thiab khoom noj ntxiv. Thaum lub sijhawm thauj mus los, thauj tsheb thauj khoom yuav tsum tau nruab nrog cov khoom siv thaum muaj xwm ceev. Thaum lub sij hawm thauj mus los, tshav ntuj raug thiab los nag yuav tsum tau tawm los tiv thaiv qhov kub kub. Khaws rau hauv qhov chaw txias, qhuav, thiab tshuab ua kom muaj cua. Lub tsev qiv ntawv ntsuas kub tsis tshaj 30 ° C, thiab cov txheeb ze cov av noo tsis pub tshaj 80%. Ntim thiab kaw. Khaws cais tawm ntawm cov kua qaub thiab tshuaj tau, zam kev sib xyaw. Thaj chaw khaws cia yuav tsum muaj cov khoom tsim nyog kom muaj cov to. Nruj me ntsis siv "tsib ob npaug" kev tswj hwm cov txheej txheem ntawm cov khoom muaj tshuaj lom.