Zirconium sand selection test

Zircon, Ilmenite and Rutile test is a common mineral separation method, which is mainly used to separate ores containing zircon, Ilmenite, Rutile and other minerals. This experimental method is simple and effective, and is widely used in fields such as mining, metallurgy, and chemical engineering. This article will provide a detailed introduction to the operating steps and precautions for the zirconium sand selection test.

1. Experimental Principles

Zircon sand separation test is based on the density difference of minerals. In the experiment, the ore is first crushed and ground, then mixed in a certain proportion and separated by adding heavy liquid. Due to the different densities of different minerals, density stratification may occur in heavy liquids, thereby achieving mineral separation. Finally, the separated minerals are dried and weighed to calculate the recovery rate and grade of each mineral.

2、 Test steps

1. Sample preparation

Crush and grind the ore to be separated, and screen out samples with a particle size of 0.15-0.25mm. Mix zircon, Ilmenite, Rutile and other minerals in a certain proportion to prepare test samples.

2. Heavy liquid preparation

Choose a density of 2.85-4.0g/cm ³ Conduct the test with heavy liquid. The commonly used heavy liquid includes Castres liquid, Sodium tungstate liquid, etc. Add the heavy liquid to the test cup, add an appropriate amount of water, and stir evenly.

3. Test operation

Add the test sample to the heavy liquid and stir evenly. After density stratification occurs in the heavy liquid, use a Glass rod to take out the layered minerals and put them into a dryer for drying. Finally, weigh the separated minerals and calculate the recovery rate and grade of each mineral.

4. Result processing

Calculate the recovery rate and grade of each mineral based on the weighing results. The calculation formula for recovery rate is: recovery rate=weight of separated mineral/weight of sample 100%; The calculation formula for grade is: grade=mineral weight after separation/mineral weight before separation 100%.

3、 Precautions

1. Select appropriate heavy liquids and choose different heavy liquids according to the different test samples.

2. Pay attention to safety during operation to avoid heavy liquid splashing into the skin and eyes.

3. During operation, attention should be paid to controlling the separation time, as too long or too short can affect the test results.

4. Clean the test cup and Glass rod in time after the test to avoid heavy liquid residue.

In summary, the zirconium sand selection test is a simple, feasible, and effective mineral separation method. In practical applications, it is necessary to operate according to specific situations, master the experimental principles and precautions, in order to achieve good experimental results.