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发明公开
CN104591282A 一种废弃脱硝催化剂综合利用的高温活化方法 无效 - 驳回

一种废弃脱硝催化剂综合利用的高温活化方法
摘要：
本发明公开了一种废弃脱硝催化剂综合利用的高温活化方法，将废弃的脱硝催化剂粉碎，把细颗粒的废弃催化剂在一定温度下通入空气进行灼烧，然后浸入一定浓度的NH4HCO3溶液中，过滤得到滤液和滤渣，滤液经沉淀及焙烧可回收五氧化二钒。该方法浸出过程对酸和碱消耗少，经过一次沉钒即可回收五氧化二钒，五氧化二钒的回收率达到84%，而过滤后的滤渣中TiO2的含量≥80%，可用于代替钛铁矿作为硫酸法生产钛白粉的原料，从而实现废弃脱硝催化剂的综合利用。
摘要（英）：

The invention discloses a high-temperature activation method for comprehensively utilizing a waste denitration catalyst. The high-temperature activation method comprises the following steps: pulverizing the waste denitration catalyst; introducing air to burn fine-particle denitration catalyst at a certain temperature; soaking the burnt denitration catalyst into an NH4HCO3 solution with a certain concentration, and filtering to obtain filtrate and filter residue; precipitating and roasting the filtrate to recycle vanadium pentoxide. According to the high-temperature activation method, consumption of acid and alkaline is less in a soaking process, and vanadium pentoxide can be recycled by performing molybdenum precipitation once, wherein a recovery rate of vanadium pentoxide is up to 84%, the content of TiO2 in the filtered filter residue is not lower than 80%, and vanadium pentoxide can be used as a raw material for producing titanium dioxide through a sulfuric acid method by replacing ilmenite, so that the comprehensive utilization of the waste denitration catalyst is realized.

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