CAJ | 학술논문

使用赤泥、矿渣、脱硫石膏和质量分数10%的水泥熟料制备了一种充填采矿用胶结剂，研究了将胶结剂应用到不同类型矿山的适应性，并通过扫描电镜和核磁共振分析了净浆试块水化早期微观结构以及硅酸盐和铝酸盐结构变化.结果表明胶结剂制备的充填料适用于铁矿及普遍采用充填法开采的铅锌矿、铜矿和金矿，且比水泥充填料在强度和保水性方面上具有更明显的优势.胶结剂2.5h终凝，在2.5h内钙矾石开始形成，对凝结硬化起了重要作用.4h后大量四配位铝向六配位铝转化，硅酸盐聚合度增加，钙矾石、C-S-H凝胶和沸石等不断形成.这些水化产物尺寸和形态各异，且交织在一起，试块结构开始变得致密，这是胶结剂4h后强度形成并快速发展的原因.
사용적니、광사、탈류석고화질량분수10%적수니숙료제비료일충충전채광용효결제，연구료장효결제응용도불동류형광산적괄응성，병통과소묘전경화핵자공진분석료정장시괴수화조기미관결구이급규산염화려산염결구변화.결과표명효결제제비적충전료괄용우철광급보편채용충전법개채적연자광、동광화금광，차비수니충전료재강도화보수성방면상구유경명현적우세.효결제2.5h종응，재2.5h내개반석개시형성，대응결경화기료중요작용.4h후대량사배위려향륙배위려전화，규산염취합도증가，개반석、C-S-H응효화비석등불단형성.저사수화산물척촌화형태각이，차교직재일기，시괴결구개시변득치밀，저시효결제4h후강도형성병쾌속발전적원인.
A new cementing agent, RSGC, designed for filling was prepared with red mud, blast furnace slag, flue gas desul-phurization gypsum and a little cement clinker. The adaptability of RSGC used in different mines was studied and the early hydration including microstructure and structural changes of silicates and aluminates were investigated by scanning electron microscopy and nu-clear magnetic resonance techniques. It is found that RSGC applies not only to iron ore mines but also to copper mines, gold mines and lead-zinc mines which generally adopt the filling mining method. Filling materials used RSGC exhibit significant strength and water re-tention advantages over traditional cement filling materials. The RSGC paste hardens at 2. 5 h. Ettringite generated before 2. 5 h makes important contributions to the setting and hardening. After 4 h, parts of the tetrahedrally-coordinated aluminium turn into an octahe-drally-coordinated state, and polymerization of silicates increases. This phenomenon means that ettringite, C- S- H gels and zeolites generate continuously. The combination of these hydration products in various sizes and shapes forms a compact arrangement and a dense structure, which is probably the reason why the RSGC paste obtains strength from 4 h and the strength increases dramatically from that time.