CAJ | 학술논문

铬渣是有钙锫烧法生产红矾钠等化工产品时排放的废渣，其产量大、毒性高而被国家有关部门列入危险废物，通过解毒(还原)可减少其中的六价铬含量，使其六价铬降低到国家危险废物规定的标准以下，转化为无毒废物，但并未从根本上解决解毒后铬渣的资源化利用问题。本文基于解毒铬渣粉具有的潜在水硬性，通过试验研究了解毒铬渣粉对水泥净浆和胶砂性能的影响。研究表明：解毒铬渣具有一定的化学胶凝活性，可通过磨细后作水泥混凝土的矿物掺合料使用，实现干法解毒铬渣的资源化利用。
락사시유개부소법생산홍반납등화공산품시배방적폐사，기산량대、독성고이피국가유관부문렬입위험폐물，통과해독(환원)가감소기중적륙개락함량，사기륙개락강저도국가위험폐물규정적표준이하，전화위무독폐물，단병미종근본상해결해독후락사적자원화이용문제。본문기우해독락사분구유적잠재수경성，통과시험연구료해독락사분대수니정장화효사성능적영향。연구표명：해독락사구유일정적화학효응활성，가통과마세후작수니혼응토적광물참합료사용，실현간법해독락사적자원화이용。
Chromium slag is the waste residue discharged in the course of production of sodium dichromate and other chemical products.Because chromium slag has high toxicity,it is in the hazardous waste list by government.Chromium slag can be detoxified to reduce the content of Cr6+ in the limitation of national hazardous waste standards. But this method cann’t fundamentally resolve the problem of resource utilization of detoxified chromium residue.Base on experiments in this research were conducted to study the effect of detoxified chromium residue on cement paste and mortar properties.Research shows that: the dry-detoxified chromium residue with chemical cementitious activity can be used as material of cement concrete mineral admixture to make resources utilization of dry-detoxified chromium residue.