Disten cevherinin sarsıntılı masa ile zenginleştirilmesinde etkin parametrelerin optimizasyonu

Although, there are anhydrous aluminosilicate minerals such as kyanite, andalusite and sillimanite with same chemical formula Al2SiO5, they differ in their inherent structures and physical properties. When the calcination process is applied at temperature around 1350o to 1380o for those material, all of them will turns to the heat tolerant material which are mullite 3Al2O3·2SiO2, and silica SiO2. As it can be understood from the name of itself, heat tolerant materials can resist to high temperature, so it is generally used in the era where high temperature applications such as furnaces, ladles, boilers, kilns etc… take place. The most important feature of the andalusite and sillimanite affirmed as refractory material are small volume changes when it is exposed calcination. These fact is important to compensate shrinkage of other material. As a result of calcination reaction, sillimanite materials turns to mullite and silise. In the course of that process, the volume of disten increases as 16-18% of its original volume, whereas andalusite 4% and sillimanite 6%. Most of the time, andalusite and sillimanite are able to reach up higher volume without any calcination reaction. However, disten should be calcined to enlarge its volume due to its inherent structure. That characteristic feature can be utilized in order to prevent cracking of clay after burning process. USA and India are at the top of disten material production whereas, Peru and South America follows them in production of andalusite. With respect to content of disten mineral, different enrichment method is used. If the content is composed of manyetite and biotite materials, severe dry or wet magnetic separation method will be performed. If quarts and feldisipate content is high, wet or dry density method is carried out for separation. On the other hand, in the fine particle phase of disten, deregulation is appeared, floatation method should be done. Moreover, shaking table-floatation or magnetic separation+floatation method can also be used with respect to characteristic feature of material and deregulation rate with in the manner of enrichment method. Ore dressing process and laboratory studies takes so long time. Every steps of research and experiment is linked to each other, so each step of studies should be ended in order to be able to commence next step of process. Due to long experimentation time, the rate of error increases. These errors can result from ambient condition like temperature, whether, noise pollution, electricity as well as individual problems like phycology and experience level of person performing experiment. In order to minimize error causing by that triggers and spending time in laboratory, statistical experimental testing setup has been used. By statistical method, condition of jerky table in parameters, velocity, amplitude and slope were investigated. The experimental results those has been appeared by performing statistical test method, 2n factorial design of Yates apparatus, were analyzed by Anova variance analysis. The most effective parameter (ac) is the internal interaction parameter; It was observed that the effect was positive when the speed and slope were high. Here, Al2O3 was recovered with 47.21% yield and 66.79% yield. On the internal interaction parameter (ac), which is the most effective parameter, samples classified according to grain size were subjected to shaking table tests. The best result was obtained with the experiment in the range of -0.2 + 0.1 mm, the 51.24% Al2O3 grade concentrate was obtained with the yield of 74.30%.