Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing gypsum board from sintering flue gas semi-dry desulfurization ash and steel slag waste
The invention relates to a method for preparing a gypsum board from sintering flue gas semi-dry desulfurization ash and steel slag waste. The method comprises the following steps: 1) preparing calcium sulfate whiskers by taking the sintering flue gas semi-dry desulfurization ash as a raw material and adopting a one-step acidification method; 2) preparing steel slag waste residue slurry, adding calcium sulfate whiskers according to the weight ratio of the steel slag waste residue to the calcium sulfate whiskers being 1: (0.1-0.2), and fully stirring to obtain gypsum board raw material slurry; (3) transferring the gypsum board raw material slurry to a curing tank, stirring for not less than 60 minutes at the temperature of 20-30 DEG C in the curing tank, dehydrating the slurry by adopting a vacuum belt type dehydration mode, and controlling the moisture content of the dehydrated slurry to be 45-55%; and injecting the dehydrated slurry into a gypsum board template. The method comprises the following steps: firstly, forming calcium sulfate whiskers from sintering flue gas semi-dry desulfurization wastes, then generating gypsum board slurry by utilizing the strength and toughness of the calcium sulfate whiskers and converter waste residues under certain chemical reaction conditions, and then carrying out constant-temperature steam curing to form the solid calcium silicate board.
本发明涉及一种利用烧结烟气半干法脱硫灰与钢渣废物制备石膏板的方法，包括1)以烧结烟气半干法脱硫灰为原料采用一步酸化法制备硫酸钙晶须；2)制备钢渣废渣浆液，按照钢渣废渣与硫酸钙晶须重量比为1:(0.1～0.2)投加硫酸钙晶须，充分搅拌获得石膏板原料浆液；3)将石膏板原料浆液移至熟化罐，熟化罐温度为20～30℃搅拌时间不低于60min，浆料进行脱水，采取真空带式脱水方式，脱水后的浆料含水率控制在45％～55％；脱水后的浆料注入石膏板模板。本发明先将烧结烟气半干法脱硫废物形成硫酸钙晶须，然后利用硫酸钙晶须的强度韧性与转炉废渣在一定化学反应条件下生成石膏板浆液，再经过恒温蒸养形成固态硅酸钙板。
Method for preparing gypsum board from sintering flue gas semi-dry desulfurization ash and steel slag waste
The invention relates to a method for preparing a gypsum board from sintering flue gas semi-dry desulfurization ash and steel slag waste. The method comprises the following steps: 1) preparing calcium sulfate whiskers by taking the sintering flue gas semi-dry desulfurization ash as a raw material and adopting a one-step acidification method; 2) preparing steel slag waste residue slurry, adding calcium sulfate whiskers according to the weight ratio of the steel slag waste residue to the calcium sulfate whiskers being 1: (0.1-0.2), and fully stirring to obtain gypsum board raw material slurry; (3) transferring the gypsum board raw material slurry to a curing tank, stirring for not less than 60 minutes at the temperature of 20-30 DEG C in the curing tank, dehydrating the slurry by adopting a vacuum belt type dehydration mode, and controlling the moisture content of the dehydrated slurry to be 45-55%; and injecting the dehydrated slurry into a gypsum board template. The method comprises the following steps: firstly, forming calcium sulfate whiskers from sintering flue gas semi-dry desulfurization wastes, then generating gypsum board slurry by utilizing the strength and toughness of the calcium sulfate whiskers and converter waste residues under certain chemical reaction conditions, and then carrying out constant-temperature steam curing to form the solid calcium silicate board.
本发明涉及一种利用烧结烟气半干法脱硫灰与钢渣废物制备石膏板的方法，包括1)以烧结烟气半干法脱硫灰为原料采用一步酸化法制备硫酸钙晶须；2)制备钢渣废渣浆液，按照钢渣废渣与硫酸钙晶须重量比为1:(0.1～0.2)投加硫酸钙晶须，充分搅拌获得石膏板原料浆液；3)将石膏板原料浆液移至熟化罐，熟化罐温度为20～30℃搅拌时间不低于60min，浆料进行脱水，采取真空带式脱水方式，脱水后的浆料含水率控制在45％～55％；脱水后的浆料注入石膏板模板。本发明先将烧结烟气半干法脱硫废物形成硫酸钙晶须，然后利用硫酸钙晶须的强度韧性与转炉废渣在一定化学反应条件下生成石膏板浆液，再经过恒温蒸养形成固态硅酸钙板。
Method for preparing gypsum board from sintering flue gas semi-dry desulfurization ash and steel slag waste
利用烧结烟气半干法脱硫灰与钢渣废物制备石膏板的方法
WANG LIYING (Autor:in) / LIU BAOSHAN (Autor:in)
14.06.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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