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Iron tailing-based unfired ceramsite and preparation method thereof
The invention discloses iron tailing-based unfired ceramsite and a preparation method thereof. The unfired ceramsite is prepared from the following raw materials in parts by weight: 15-30 parts of iron tailing powder, 2 parts of cement, 3-6 parts of quick lime and desulfurized gypsum and water. Wherein the weight part ratio of the water to the quick lime to the desulfurized gypsum is 5: 3. The mode that water is added in advance to digest the quick lime and the desulfurized gypsum to form the mixed slurry is adopted, Ca (OH) 2 generated after the quick lime is digested can be effectively promoted to react with active SiO2 in the iron tailing powder, the mixture is promoted to generate a C-S-H new phase with hydraulicity, the raw material utilization rate is high, waste is few, the pelletizing rate is high, the initial strength is high, secondary maintenance is not needed, and the cost is low. And the defect that the unfired ceramsite is easily and quickly dissolved when meeting water at the initial maintenance stage is overcome.
本发明公开了一种铁尾矿基免烧陶粒及其制备方法，免烧陶粒由以下重量份的原料组成：铁尾矿粉15‑30份、水泥2份、生石灰和脱硫石膏3‑6份，水；其中水与生石灰和脱硫石膏重量份之比为5：3。本发明采用预先加水消解生石灰和脱硫石膏形成混合浆体的方式，可以有效促进生石灰消解后产生Ca(OH)2与铁尾矿粉中活性SiO2进行反应，促使混合料生成具有水硬性的C‑S‑H新物相，原料利用率高、废料少、成球率高、初期强度高，无需二次养护，弥补了免烧陶粒养护初期遇水易快速溶解的不足。
Iron tailing-based unfired ceramsite and preparation method thereof
The invention discloses iron tailing-based unfired ceramsite and a preparation method thereof. The unfired ceramsite is prepared from the following raw materials in parts by weight: 15-30 parts of iron tailing powder, 2 parts of cement, 3-6 parts of quick lime and desulfurized gypsum and water. Wherein the weight part ratio of the water to the quick lime to the desulfurized gypsum is 5: 3. The mode that water is added in advance to digest the quick lime and the desulfurized gypsum to form the mixed slurry is adopted, Ca (OH) 2 generated after the quick lime is digested can be effectively promoted to react with active SiO2 in the iron tailing powder, the mixture is promoted to generate a C-S-H new phase with hydraulicity, the raw material utilization rate is high, waste is few, the pelletizing rate is high, the initial strength is high, secondary maintenance is not needed, and the cost is low. And the defect that the unfired ceramsite is easily and quickly dissolved when meeting water at the initial maintenance stage is overcome.
本发明公开了一种铁尾矿基免烧陶粒及其制备方法，免烧陶粒由以下重量份的原料组成：铁尾矿粉15‑30份、水泥2份、生石灰和脱硫石膏3‑6份，水；其中水与生石灰和脱硫石膏重量份之比为5：3。本发明采用预先加水消解生石灰和脱硫石膏形成混合浆体的方式，可以有效促进生石灰消解后产生Ca(OH)2与铁尾矿粉中活性SiO2进行反应，促使混合料生成具有水硬性的C‑S‑H新物相，原料利用率高、废料少、成球率高、初期强度高，无需二次养护，弥补了免烧陶粒养护初期遇水易快速溶解的不足。
Iron tailing-based unfired ceramsite and preparation method thereof
一种铁尾矿基免烧陶粒及其制备方法
CHEN JIAN (author) / WANG FENG (author) / WU XIAOWEN (author) / YAN ZI'ANG (author) / GU XUEDONG (author)
2023-11-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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