Method of removing phosphorus from steel slag to be recycled
专利类型：发明专利
语 言：中文
申 请 号：CN201510318286.2
申 请 日：20150611
申 请 人：重庆大学
申请人地址：400044 重庆市沙坪坝区沙正街174号
公 开 日：20170301
公 开 号：CN104894308B
代 理 人：李明,张先芸
代理机构：重庆博凯知识产权代理有限公司 50212
摘 要：Abstract：The invention discloses a method of removing phosphorus from steel slag to be recycled. The method is as follows: smashing and levigating the steel slag; leaching using a citric acid-NaOH-HCl buffer solution to obtain a phosphorus-containing filtrate and low-phosphorous steel slag; drying the low-phosphorous steel slag, and returning to the sintering, iron making or steel making process for recycling. The phosphorus-containing filtrate subjected to leaching process is detected, and the result shows that the leaching efficiency of phosphorus from the steel slag reaches up to 92%, and the leaching efficiency of the iron element is only 19%, so that the method provided by the invention avoids large iron loss while ensuring the efficient removal of phosphorus from the steel slag; the method also has the advantages that the leachate is safe and non-toxic, easy to recycle, simple in process operation, low in cost and environment-friendly.
主 权 项：一种钢渣除磷循环利用方法，其特征在于，将钢渣破碎并磨细后，用柠檬酸?NAOH?HCL缓冲液浸出处理，得到含磷滤液和低磷钢渣；将所述低磷钢渣进行干燥处理后，返回烧结、炼铁或炼钢工序，进行循环利用。
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法律状态：生效
IPC专利分类号：C21B3/06