Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for reinforced cooling and granulation of blast furnace slag
The invention discloses a method for intensively cooling and granulating blast furnace slag, which comprises the following steps: heating blast furnace slag with alkalinity of 1.0-1.3 to 1500-1600 DEG C, and keeping the temperature constant for 0.5-1 hour, so that the blast furnace slag reaches a flowable molten state to obtain liquid molten slag; the method comprises the steps that liquid slag is poured into an inlet of a slag flowing groove, the liquid slag vertically flowing downwards out of an outlet of the slag flowing groove is blown through a Laval nozzle, blast furnace slag amorphous slag beads are obtained, and gas-solid two-phase flow formed by mixing high-pressure gas and solid cold materials is sprayed out through the Laval nozzle; the device is used for crushing and granulating liquid slag and wrapping solid cold materials in the liquid slag to form a cold core hot slag structure. According to the method, the blast furnace slag granulation rate is increased, the particle size of granulated slag beads is effectively reduced, and the slag bead vitreous body content is increased.
本发明公开了一种强化冷却粒化高炉渣的方法，强化冷却粒化高炉渣的方法，包括以下步骤：将碱度1.0～1.3高炉渣加热至1500～1600℃并于该温度恒温0.5～1h，以使高炉渣达到可流动的熔融状态，得到液态熔渣；将液态熔渣倒入流渣槽入口，用拉瓦尔喷嘴对流渣槽出口处垂直向下流出的液态熔渣进行喷吹，得到高炉渣非晶渣珠，其中，拉瓦尔喷嘴喷出的为高压气体和固体冷料混合组成的气‑固两相流，用于将液态熔渣破碎粒化同时使固体冷料被裹覆于液态熔渣中，形成“冷核热渣”结构。本发明方法提升高炉熔渣粒化率，有效减小粒化渣珠粒径，增加渣珠玻璃体含量。
Method for reinforced cooling and granulation of blast furnace slag
The invention discloses a method for intensively cooling and granulating blast furnace slag, which comprises the following steps: heating blast furnace slag with alkalinity of 1.0-1.3 to 1500-1600 DEG C, and keeping the temperature constant for 0.5-1 hour, so that the blast furnace slag reaches a flowable molten state to obtain liquid molten slag; the method comprises the steps that liquid slag is poured into an inlet of a slag flowing groove, the liquid slag vertically flowing downwards out of an outlet of the slag flowing groove is blown through a Laval nozzle, blast furnace slag amorphous slag beads are obtained, and gas-solid two-phase flow formed by mixing high-pressure gas and solid cold materials is sprayed out through the Laval nozzle; the device is used for crushing and granulating liquid slag and wrapping solid cold materials in the liquid slag to form a cold core hot slag structure. According to the method, the blast furnace slag granulation rate is increased, the particle size of granulated slag beads is effectively reduced, and the slag bead vitreous body content is increased.
本发明公开了一种强化冷却粒化高炉渣的方法，强化冷却粒化高炉渣的方法，包括以下步骤：将碱度1.0～1.3高炉渣加热至1500～1600℃并于该温度恒温0.5～1h，以使高炉渣达到可流动的熔融状态，得到液态熔渣；将液态熔渣倒入流渣槽入口，用拉瓦尔喷嘴对流渣槽出口处垂直向下流出的液态熔渣进行喷吹，得到高炉渣非晶渣珠，其中，拉瓦尔喷嘴喷出的为高压气体和固体冷料混合组成的气‑固两相流，用于将液态熔渣破碎粒化同时使固体冷料被裹覆于液态熔渣中，形成“冷核热渣”结构。本发明方法提升高炉熔渣粒化率，有效减小粒化渣珠粒径，增加渣珠玻璃体含量。
Method for reinforced cooling and granulation of blast furnace slag
一种强化冷却粒化高炉渣的方法
KANG YUE (Autor:in) / LIU CHAO (Autor:in) / SUN RUIJING (Autor:in) / XING HONGWEI (Autor:in) / WANG FENG (Autor:in)
10.11.2023
Patent
Elektronische Ressource
Chinesisch
Automatic control of installation for granulation of blast furnace slag
| Engineering Index Backfile | 1961
Blast furnace slag obtained from dry granulation method as a component in slag cement
| British Library Online Contents | 2017