Investigation of The Use of Calcium Naphthalene Sulfonate as A Binder in Magnesite Spinel Brick Production and Determination of Optimum Conditions

Özkan Küçük
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Abstract

Refractory materials are indispensable for industries working with high temperatures. Magnesite spinel refractory bricks are used in the cement industry, and calcium lignosulfonate is used as a binder in their production. Due to forest fires and similar reasons in recent years, there is a problem in the supply of calcium lignosulfonate raw materials. In this study, research was conducted on alternative binders to be used in the production of magnesite spinel bricks and the optimum conditions for production with the selected binder were determined. Some of the binders are calcium naphthalene sulfonate, sodium naphthalene sulfonate, magnesium oxide, magnesium sulfate, and molasses. As a result of preliminary tests, it was observed that the most successful results were obtained with calcium naphthalene sulfonate. The optimum conditions for the production of magnesite spinel refractory bricks using calcium naphthalene sulfonate were found by the Taguchi method. As parameters, seawater sintered magnesite in 4 different fractions (A: 3-5 mm, B: 1-3 mm, C: 0-1 mm and D: Powder) and Sinter Spinel in 2 different fractions (E: 3-5 mm and F: 1-3 mm) in total, 6 parameters were selected and an L16 (44x22) Taguchi orthogonal array design was created for this. Volume weight, water absorption, porosity, and strength tests were performed on the samples obtained. Accordingly, taking into account the strength values, the optimum conditions were determined as A1, B1, C2, D4, E1 and F2. Under these conditions, the estimated strength value was calculated as 84.24 N/mm2 and the experimental value was 83.85 N/mm2.
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萘磺酸钙作为粘合剂用于菱镁矿砖生产的研究及最佳条件的确定
耐火材料是高温作业中不可或缺的材料。菱镁尖晶石耐火砖用于水泥工业,而木质素磺酸钙则是其生产过程中的粘合剂。近年来,由于森林火灾和类似原因,木质素磺酸钙原料的供应出现了问题。在这项研究中,对用于生产菱镁尖晶石砖的替代粘合剂进行了研究,并确定了使用所选粘合剂进行生产的最佳条件。其中一些粘合剂包括萘磺酸钙、萘磺酸钠、氧化镁、硫酸镁和糖蜜。初步试验结果表明,萘磺酸钙的效果最好。利用田口方法找到了使用萘磺酸钙生产菱镁矿尖晶石耐火砖的最佳条件。作为参数,海水烧结菱镁矿分为 4 个不同部分(A:3-5 毫米、B:1-3 毫米、C:0-1 毫米和 D:粉末),烧结尖晶石分为 2 个不同部分(E:3-5 毫米和 F:1-3 毫米),总共选择了 6 个参数,并为此进行了 L16(44x22)田口正交阵列设计。对获得的样品进行了容重、吸水率、孔隙率和强度测试。因此,考虑到强度值,最佳条件被确定为 A1、B1、C2、D4、E1 和 F2。在这些条件下,计算得出的估计强度值为 84.24 牛顿/平方毫米,实验值为 83.85 牛顿/平方毫米。
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