A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for producing gravel aggregate by using coal gasification ash
The invention discloses a method for producing gravel aggregate by using coal gasification ash, which comprises the following steps: S1, pretreatment: adding a stripping agent into the ash; s2, airflow crushing and airflow separation are conducted, specifically, the ash residues are crushed and separated into carbon-containing powder and carbon-free powder; s3, carrying out acidolysis reaction on the carbon-free powder; s5, carrying out three-phase separation on the raw materials after the acidolysis reaction; s6, the solids obtained through three-phase separation comprise upper-layer solids and lower-layer solids, and the lower-layer solids are electromagnetically separated into vitreous minerals and non-vitreous minerals; s7, part of the carbon-free powder in the step S3 and the non-glass minerals in the step S5 are subjected to electromagnetic separation, and silicon-rich minerals are obtained; s8, the silicon-rich minerals are subjected to electromagnetic separation, and an aluminum-calcium-silicon mixture is obtained; and S9, the aluminum-calcium-silicon mixture is subjected to electric separation, and silicon-rich nonmetallic minerals are obtained, petrified and then smashed to serve as gravel aggregate. The method has the advantages that the coal gasification ash can be consumed on a large scale, and the high-quality gravel aggregate can be manufactured.
本发明公开了一种煤气化灰渣用于生产砂石骨料的方法，包括以下步骤S1、预处理，向灰渣中加入剥离剂；S2、气流粉碎与气流分离，将灰渣进行粉碎，并分离为含碳粉末与不含碳粉末；S3、对不含碳粉末进行酸解反应；S5、酸解反应后的原料进行三相分离；S6、三相分离出的固体，包括上浮层固体和下层固体，下层固体电磁分离为玻璃体矿物和非玻璃体矿物；S7、将步骤S3中的部分不含碳粉末和步骤S5中的非玻璃体矿物进行电磁分离，得到富硅矿物；S8、将所述富硅矿物进行电磁分离，得到铝钙硅混合体；S9、将所述铝钙硅混合体进行电选，得到富硅非金属矿物并石化后进行粉碎用作砂石骨料。本发明具有能够规模化消纳煤气化灰渣并制作高品质砂石骨料的优点。
Method for producing gravel aggregate by using coal gasification ash
The invention discloses a method for producing gravel aggregate by using coal gasification ash, which comprises the following steps: S1, pretreatment: adding a stripping agent into the ash; s2, airflow crushing and airflow separation are conducted, specifically, the ash residues are crushed and separated into carbon-containing powder and carbon-free powder; s3, carrying out acidolysis reaction on the carbon-free powder; s5, carrying out three-phase separation on the raw materials after the acidolysis reaction; s6, the solids obtained through three-phase separation comprise upper-layer solids and lower-layer solids, and the lower-layer solids are electromagnetically separated into vitreous minerals and non-vitreous minerals; s7, part of the carbon-free powder in the step S3 and the non-glass minerals in the step S5 are subjected to electromagnetic separation, and silicon-rich minerals are obtained; s8, the silicon-rich minerals are subjected to electromagnetic separation, and an aluminum-calcium-silicon mixture is obtained; and S9, the aluminum-calcium-silicon mixture is subjected to electric separation, and silicon-rich nonmetallic minerals are obtained, petrified and then smashed to serve as gravel aggregate. The method has the advantages that the coal gasification ash can be consumed on a large scale, and the high-quality gravel aggregate can be manufactured.
本发明公开了一种煤气化灰渣用于生产砂石骨料的方法，包括以下步骤S1、预处理，向灰渣中加入剥离剂；S2、气流粉碎与气流分离，将灰渣进行粉碎，并分离为含碳粉末与不含碳粉末；S3、对不含碳粉末进行酸解反应；S5、酸解反应后的原料进行三相分离；S6、三相分离出的固体，包括上浮层固体和下层固体，下层固体电磁分离为玻璃体矿物和非玻璃体矿物；S7、将步骤S3中的部分不含碳粉末和步骤S5中的非玻璃体矿物进行电磁分离，得到富硅矿物；S8、将所述富硅矿物进行电磁分离，得到铝钙硅混合体；S9、将所述铝钙硅混合体进行电选，得到富硅非金属矿物并石化后进行粉碎用作砂石骨料。本发明具有能够规模化消纳煤气化灰渣并制作高品质砂石骨料的优点。
Method for producing gravel aggregate by using coal gasification ash
一种煤气化灰渣用于生产砂石骨料的方法
JIANG DONGRUI (author) / JIANG SUI'AN (author) / JIANG DONGSHENG (author)
2023-01-03
Patent
Electronic Resource
Chinese
Coal gangue gravel aggregate production system and production method
| European Patent Office | 2024
Preparation method for producing gravel aggregate from construction waste
| European Patent Office | 2022
Producing sand and gravel aggregate for hungry horse dam
| Engineering Index Backfile | 1951
| Engineering Index Backfile | 1915