本文關(guān)鍵詞： 氧化鈉 錳渣 玻璃相 水硬活性　出處：《混凝土》2016年12期 　論文類型：期刊論文

【摘要】：礦渣水硬活性與玻璃相含量正相關(guān),調(diào)整玻璃相含量控制水硬活性是目前改性冶金渣的重要途徑。錳渣是冶煉錳鐵合金過程中高溫熔融的錳鐵爐渣經(jīng)水淬急冷形成的一種副產(chǎn)品,含有少量C_2S等礦物,具有一定潛在水硬活性。嘗試通過加入氧化鈉(Na_2O)以提高錳渣玻璃相含量及改善[SiO_4]或[AlO_6]結(jié)構(gòu)單元聚集形式,從而達(dá)到提高錳渣活性的目的,同時(shí)深入分析了Na_2O用量、煅燒溫度、保溫時(shí)間等因素對(duì)錳渣活性指數(shù)的影響機(jī)制。研究發(fā)現(xiàn),Na_2O摻量為10%左右,煅燒溫度為1 400℃左右,保溫1 h,改性水淬錳渣的玻璃相含量達(dá)到98.5%,改性錳渣微粉28 d活性指數(shù)高達(dá)88.9%,比改性之前的錳渣活性提高了23.7%。紅外分析結(jié)果證實(shí),改性后的錳渣中主要以[SiO_4]四面體和[AlO_6]八面體存在,有助于其后期活性的發(fā)揮。
[Abstract]:The hydration activity of slag is positively correlated with the content of glass phase. Adjusting the content of glass phase to control the water hardening activity is an important way to modify the metallurgical slag. Manganese slag is a by-product of ferromanganese slag melting at high temperature in the process of smelting ferromanganese alloy. It contains a small amount of C _ 2S and other minerals. This paper attempts to increase the content of glass phase of manganese slag and the aggregation form of [SiO_4] or [AlO_6] structure units by adding sodium oxide and Na2O. in order to achieve the purpose of improving the activity of manganese slag, the amount of Na_2O and calcination temperature are also analyzed. The influence mechanism of heat preservation time on the activity index of manganese slag was studied. It was found that the content of Na _ 2O was about 10%, and the calcination temperature was about 1,400 鈩，

本文編號(hào)：1544319