14. Phosphogypsum
Phosphogypsum hais txog cov khoom los ntawm cov khoom tsim tawm thaum sulfuric acid siv los kho cov pob zeb phosphate hauv phosphoric acid ntau lawm. Lub ntsiab tivthaiv yog calcium sulfate dihydrate (CaSO4·2H2O), tab sis kuj muaj ib tug me me ntawm unreacted phosphate pob zeb, phosphoric acid, fluoride, organic teeb meem thiab poov tshuaj, sodium thiab lwm yam Cheebtsam, uas feem ntau yog grey, grey thiab dub, salllow thiab yog li ntawd.
15. Desulfurized gypsum
Kuj hu ua pa luam yeeb desulfurization gypsum, sulfur gypsum los yog FGD gypsum, lub ntsiab muaj pes tsawg leeg yog tib yam li ntuj gypsum, calcium sulfate dihydrate CaSO4 · 2H2O, cov ntsiab lus ntau dua los yog sib npaug rau 93 feem pua, yog cov txiv qaub - limestone sib tsoo rau hauv slurry, yog li ntawd. Tom qab tshem tawm cov plua plav tawm ntawm SO2 uas muaj cov roj flue los ntawm cov slurry scrubber kom tshem tawm SO2. Txiv qaub slurry reacts nrog SO2 los tsim calcium sulfate thiab calcium sulfite. Calcium sulfite yog oxidized rau calcium sulfate, uas yog hu ua desulfurized gypsum.
16. Titanium gypsum
Yog siv txoj kev sulfuric acid los tsim titanium dioxide, txhawm rau kho cov dej khib nyiab, ntxiv cov txiv qaub (lossis calcium carbide slag) kom tshem tawm cov kua qaub ntau ntawm cov dej khib nyiab thiab ua nrog ob lub gypsum dej ua lub ntsiab ntawm cov khoom pov tseg.
17. Boron gypsum
Nws yog ib qho byproduct ntawm boric acid ntau lawm, uas feem ntau muaj calcium sulfate ntawm ob crystalline dej, ua raws li boron trioxide thiab lwm yam impurities.
18. Fluorine gypsum
Nws yog ib tug byproduct ntawm ua hydrogen fluoride nrog sulfuric acid thiab fluorspar, feem ntau anhydrous calcium sulfate.
19. Lub tsev plaster
Nws yog cov hmoov dawb ua los ntawm ntuj gypsum los yog tshuaj lom neeg los ntawm cov khoom muaj calcium sulfate thiab phosphogypsum, fluoropgypsum, boron gypsum thiab lwm yam ntaub ntawv raw los ntawm calcining mature gypsum thiab sib tsoo zoo. Lub ntsiab tivthaiv yog -type semi-aqueous gypsum, uas yog ib tug powdery binder tsis muaj additives.
20. Pem teb plaster
Nws yog ib hom pneumatic cementing khoom npaj los ntawm calcination ntawm ntuj dihydrite gypsum los yog ntuj anhydrite ntawm 900-1100 degree thiab ces los ntawm kev sib tsoo. Lub Soviet Union, Poland, Switzerland, Austria thiab lwm lub teb chaws tau ntev siv cov khoom no los tsim seamless plag tsev thiab pem teb vuas, nrog rau cov kauj ruam, qhov rais sills thiab lwm yam Cheebtsam thiab ib co lwm yam architectural kos duab qhov chaw, tab sis kuj siv los npaj lub tsev mortar, pob zeb.
21. Xim lub plaster
Calcium sulfate dihydrate los yog anhydrous calcium sulfate los ntawm damask burning, cov khoom yog -type semi-hydrous gypsum thiab anhydrite II, ib leeg los yog tov nrog admixture, kuj yuav muab ntxiv rau aggregate ua binder. Raws li kev siv, nws tuaj yeem muab faib ua plaster plaster, hauv qab plaster plaster thiab rwb thaiv tsev plaster plaster.
22. Bonded plaster thiab caulking plaster
Ob cov ntaub ntawv no yog cov ntaub ntawv txhawb nqa ntawm daim ntawv gypsum board. Nws yog npaj los ntawm kev ntxiv cov dej tuav tus neeg saib xyuas, tus neeg sawv cev sib txuas, teeb tsa lub sijhawm tswj hwm, tus neeg sawv cev osmotic thiab sib txawv zoo sib xyaw nrog lub tsev gypsum ua cov khoom siv hauv paus. Nws muaj ib feem thiab ob qho tib si.
23. Muaj zog plaster
Cov khoom siv cementing yog tsim los ntawm hom semi-hydrous gypsum.
24, self-leveling plaster
Nws yog ib yam khoom ntawm tus kheej-leveling rau hauv av, uas muab faib ua semi-aqueous gypsum hom thiab II anhydrous gypsum hom. Ntau yam khoom sib xyaw (xws li dej txo tus neeg sawv cev, tus neeg sawv cev thickening, defoaming tus neeg saib xyuas thiab cov tawv tawv tawv, thiab lwm yam) ntxiv rau gypsum. Thaum gypsum siv los ua cov khoom siv tseem ceeb, tus neeg sawv cev retarding ntxiv. Thaum II gypsum siv los ua cov khoom siv tseem ceeb, activator ntxiv. Txhawm rau txhim kho dej tsis kam, ib qho kev faib ua feem ntawm cov cement yog ntxiv rau ob lub substrate.
25. Hom II anhydrite binder
Ib hom II anhydrite cementitious khoom yog tsim los ntawm kev hlawv ntuj dihydrite ntawm qhov kub thiab txias, sib tsoo kom zoo thiab ntxiv qhov tsim nyog ntawm acid activator lossis acid-base compound activator. Nws yog tsim rau sab nrauv phab ntsa kho kom zoo nkauj ntawm cov tsev nyob rau hauv arid thiab rainless cheeb tsam.
26. Pwm plaster
Nyob rau hauv cov ceramic (xim pottery, nplua porcelain, huv si ceramics, coarse pottery thiab hais txog) kev lag luam, yuav ua tau los ntawm dej thiab plaster ntawm Paris piv txog li 70 feem pua ntawm cov ntxeem tau pwm, rau kev npaj ntawm "ntub khoom dawb paug", ceramic pwm gypsum hmoov nrog hom thiab hom semi-hydrous gypsum.
