毕业设计（论文）--粉煤灰浮选脱碳技术研究.doc

粉煤灰浮选脱碳技术研究 摘要 粉煤灰曾作为燃煤企业的固体废弃物，随着先进关键技术的研发和推广，现在对于粉煤灰的开发利用逐步展开。粉煤灰的含碳量高，烧失量也高，严重制约粉煤灰的综合利用与商品化。为了降低粉煤灰中的含碳量和充分利用资源，本文将从粉煤灰的结构、用途等方面来描述粉煤灰的利用现状、研究动态与必威体育精装版进展 The Technology of Removing Carbon from Fly Ash by Flotation Abstract Fly ash was used as solid waste coal enterprises, with advanced technology development and promotion, now for the development and utilization of fly ash spread out stage by stage. Fly ash carbon content is high, loss is also high, seriously restricting the comprehensive utilization of powdered coal ash and commercialization. In order to reduce the carbon content in fly ash and make full use of resources, this paper will from fly ash by structure, application and other aspects to describe ash utilization status, research trends and latest progress in comprehensive utilization of fly ash, forecast the development trend and application prospects, and determining the ash removing unburned carbon flotation experimental technology. The author undertook bold attempt, in the laboratory of raw materials on the basis of original fly ash, fly ash to selected experimental selected material, with light diesel oil as collector, 2# oil as foaming agent, using a coarse fine sweep flotation process, can make the selected ore loss reaches above 50%, scavenging tail ash burning loss amount is in 5% the following, tail ash yield of about 32.77%, which achieved the certain standard, have a certain market value. Keywords：Fly Ash, Removing Carbon, Flotation 目 录 摘要 Ⅰ Abstract II 第一章 绪 论 1 1.1 课题的提出背景 1 1.1.1 粉煤灰的产生与研究历史渊源 1 1.1.2 粉煤灰的用途及利用存在问题 1 1.1.3 粉煤灰全球形势与背景 3 1.2 选题的必要性和意义 4 1.3 国内外粉煤灰分选工艺研究概况 6 1.4 粉煤灰除炭原理和方法 8 1.4.1 粉煤灰除炭原理 8 1.4.2 粉煤灰除炭方法 8 1.5 课题研究主要方法和思路 9 第二章 试验前的准备 11 2.1 粉煤灰理化性质分析 11 2.2 试验用主要仪器 13 2.3 相关试验参数的测定方法 13 2.3.1 烧失量测定方法步骤 13 2.3.2 灰分测定方法 14 2.4 试验思路及方案 14 2.5 小节 15 第三章 粉煤灰浮选脱碳试验 16 3.1 粉煤灰的粒度特性分析与入选粉煤灰物料的确定 16 3.2 浮选药剂的选择与分析 18 3.2.1 捕收剂的选择? 19 3.2.2 起泡剂的选择 19 3.3 粗选药剂用量试验与分析 20 3.3.1 捕收剂用量试验 20 3.3.2 起泡剂用量试验 22 3.4 矿浆浓度条件试验 23 3.5 粗选时间对浮选的影响 2