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发明公开
CN101468890A 立窑1350℃±100℃高温煅烧10-15%铬渣35-40%粉煤灰20-30%碱渣水泥建材骨料技术 无效 - 撤回

立窑1350℃±100℃高温煅烧10-15%铬渣35-40%粉煤灰20-30%碱渣水泥建材骨料技术
摘要：
本发明属于铬渣的治理与综合利用技术，将10－15％铬渣35－40％粉煤灰20－30％碱渣与煤、粘土配比，均混，磨粉，成球，煅烧，利用立窑中高温1350℃±100℃环境及一氧化碳使铬渣中六价铬还原为三价铬，进而达到解毒和粉煤灰、碱渣的烧成料可做建材骨料，不产生二次污染，治理速度快，费用低，降低工程造价。
摘要（英）：

The invention belongs to treatment and comprehensive utilization technology of chromium slag, which comprises: mixing 10 to 15 percent of chromium slag, 35 to 40 percent of fly ash, and 20 to 30 percent of alkali slag with coal and clay; evenly mixing, pulverizing, pelletizing and calcining the mixture; and adopting the high-temperature environment of between 1,250 and 1,450 DEG C and carbonic oxide in a vertical kiln to reduce hexavalent chromium in the chromium slag into trivalent chromium, so as to further achieve the aims of detoxification, usage of firing materials of the fly ash and the alkali slag as building aggregate, no secondary pollution, high treatment speed, low cost and reduction of the construction cost.

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