銅二級冶煉爐渣資源化之研究;Research on the Resource of Copper Secondary Smelting Slag

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Title:	銅二級冶煉爐渣資源化之研究;Research on the Resource of Copper Secondary Smelting Slag
Authors:	劉秉政;Liu, Ping-Cheng
Contributors:	環境工程研究所在職專班
Keywords:	含銅水淬爐渣;細骨材;水泥混凝土;碎石級配
Date:	2017-07-28
Issue Date:	2017-10-27 16:23:39 (UTC+8)
Publisher:	國立中央大學
Abstract:	本研究以非鐵金屬二級冶煉－銅二級冶煉程序所產生之含銅水淬爐渣為研究標的，探討其取代部分細骨材進行摻配，製成碎石級配及水泥混凝土之可行性。此外本研究先進行含銅水淬爐渣之基本性質分析，再依一般骨材品質評估項目進行相關物理、化學及力學等性質測試，以決定含銅水淬爐渣製成碎石級配及預拌混凝土之最佳摻配比，最後將含銅水淬爐渣取代部分細骨材，利用各種試驗（含抗壓強度試驗、膨脹試驗、氯離子試驗、坍度試驗、磨損率、健度值、加州載重比、限度試驗等）探討爐渣取代水泥混凝土骨材及碎石級配粒料之影響。實驗結果顯示，含銅水淬爐渣做為混凝土及碎石級配之骨材摻料具技術可行性，惟因部分檢測數值接近法規規範值，仍應進行長期追蹤。 ;The purpose of this research was to discuss the feasibility with the addition of some copper-containing water quenching slag which produced by non-ferrous metal secondary smelting- copper secondary smelting process in gradation and cement concrete. The experiments were divided into three stages, because the copper-containing water quenched slag is the business waste of industrial process, it is necessary to understand the potential hazardous substances before use as recycled aggregates, so the first stage was to execute the element composition and metal analysis; the second stage was to conduct physical,chemical and mechanics test of the quality assessment of aggregate,to determine the best proportioning ratio；the third stage is to replace some of the aggregate with copper-containing water quenched slag, using various tests (including compressive strength test, expansion test,chloride ion test,slump test,abrasion test, soundness, California bearing ratio, atterberg limits test, etc.) to discuss the effects of replacing the cement concrete aggregate and gradation by slag. The results showed that the copper-containing water quenched slag was crystallinity and had a specific gravity of 3.6 which was a latent pozzolans and close to Class F fly ash；the grain size of the powder is about 0.4mm,it is between the coarse and middle sand of the fine aggregate and can be used as the aggregate of paving engineering grade. The results of compressive strength and expansion test indicated that addition of copper-containing water quenched slag to different fine aggregate replacement rate to the cement concrete, replacement rate of 30% is better.Results of the chloride ion test indicated low correlation between the slag substitution rate and the chloride ion content of the concrete,and the slump test results showed that the slump test value decreased with the increase of the copper-water quenched slag. The results of Los Angeles abrasion test showed that the abrasion rate about 30 to 35%,soundness test showed that the weight loss of coarse aggregates was about 1.2 to 1.5% and the weight loss of fine aggregates about 1.9 to 2.0% were conforms to the grading of the substrate specification.California bearing ratio test showed that at 95% compaction,each ratio is in line with the second type of substrate grade CBR value of at least 80% requirements, and CBR value increased with the copper-water quenched slag replacement rate and compaction Increase, that is, the bearing strength will be enhanced. The results of the Atterberg limits test showed that conforms with the specifications of the substrate grade of the pavement engineering for each group. According to the CNS 15311 aggregate by the hydration of the potential expansion test , after soaking 70 ℃ hot water 7 days, the results showed no expansion of the reaction occurred. The TCLP was used to simulate the dissolution of copper-containing water quenched slag in the use of roadbed gradation, the results were also lower than those of hazardous waste
Appears in Collections:	[Executive Master of Environmental Engineering] Electronic Thesis & Dissertation

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