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Production technology for co-production of magnesium obtained by Pidgeon process and cement
The invention discloses a production technology for co-production of magnesium obtained by Pidgeon process and cement. The production technology specifically comprises the following steps that (1) dolomite is broken at first, then put into a rotary kiln for roasting, and cooled for standby application; (2) silicon iron is broken at first and then subjected to fine grinding for standby application;(3) the dolomite and the silicon iron are mixed, the allowance of the silicon iron is controlled to 22-25%, and a mixture is obtained; (4) the mixture is subjected to vacuum thermal reduction, roughmagnesium and reducing slag are obtained, then, the rough magnesium is refined, and finished refined magnesium is obtained; and (5) the reducing slag is cooled and then mixed with fly ash and quicklime powder, grinding, pelletizing, roasting, cooling and pulverizing are conducted, and finished cement is obtained. According to the production technology, the blending quantity of the silicon iron isincreased before vacuum thermal reduction, accordingly, the conversion rate of calcined dolomite is increased, the content of magnesium oxide in the reducing slag is decreased, the qualified fly ash and quicklime powder with the required quantity after calculating are added, and then, a qualified cement product can be produced according to cement production standards.
本发明公开了一种皮江法炼镁联产水泥的生产工艺，具体包括以下步骤：(1)先将白云石进行破碎，然后放入回转窑焙烧，冷却，备用；(2)先将硅铁破碎，然后细磨，备用；(3)将白云石和硅铁混合，控制硅铁的裕量为22％～25％，得到混合物；(4)将混合物进行真空热还原，得到粗镁和还原渣，然后将粗镁进行精炼，得到成品精镁；(5)将还原渣进行冷却，然后加入粉煤灰和生石灰粉混合，研磨，成球，焙烧，冷却，粉磨，得到成品水泥。本发明通过在真空热还原前增加硅铁的配入量，从而提高煅烧白云石的转化率，减少还原渣中氧化镁的含量，加入计算后需要量的合格粉煤灰和生石灰粉，再按水泥生产标准即可生产合格的水泥产品。
Production technology for co-production of magnesium obtained by Pidgeon process and cement
The invention discloses a production technology for co-production of magnesium obtained by Pidgeon process and cement. The production technology specifically comprises the following steps that (1) dolomite is broken at first, then put into a rotary kiln for roasting, and cooled for standby application; (2) silicon iron is broken at first and then subjected to fine grinding for standby application;(3) the dolomite and the silicon iron are mixed, the allowance of the silicon iron is controlled to 22-25%, and a mixture is obtained; (4) the mixture is subjected to vacuum thermal reduction, roughmagnesium and reducing slag are obtained, then, the rough magnesium is refined, and finished refined magnesium is obtained; and (5) the reducing slag is cooled and then mixed with fly ash and quicklime powder, grinding, pelletizing, roasting, cooling and pulverizing are conducted, and finished cement is obtained. According to the production technology, the blending quantity of the silicon iron isincreased before vacuum thermal reduction, accordingly, the conversion rate of calcined dolomite is increased, the content of magnesium oxide in the reducing slag is decreased, the qualified fly ash and quicklime powder with the required quantity after calculating are added, and then, a qualified cement product can be produced according to cement production standards.
本发明公开了一种皮江法炼镁联产水泥的生产工艺，具体包括以下步骤：(1)先将白云石进行破碎，然后放入回转窑焙烧，冷却，备用；(2)先将硅铁破碎，然后细磨，备用；(3)将白云石和硅铁混合，控制硅铁的裕量为22％～25％，得到混合物；(4)将混合物进行真空热还原，得到粗镁和还原渣，然后将粗镁进行精炼，得到成品精镁；(5)将还原渣进行冷却，然后加入粉煤灰和生石灰粉混合，研磨，成球，焙烧，冷却，粉磨，得到成品水泥。本发明通过在真空热还原前增加硅铁的配入量，从而提高煅烧白云石的转化率，减少还原渣中氧化镁的含量，加入计算后需要量的合格粉煤灰和生石灰粉，再按水泥生产标准即可生产合格的水泥产品。
Production technology for co-production of magnesium obtained by Pidgeon process and cement
一种皮江法炼镁联产水泥的生产工艺
ZHU GUANGDONG (author) / JI JUNKANG (author) / ZHU DENGQIANG (author) / CHEN LEI (author) / JI LIJIN (author)
2020-05-05
Patent
Electronic Resource
Chinese
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