Why is the content of silicon in Ferrosilicon determined by specific gravity method?

We know that aluminum sheets and irons of the same volume are lighter than iron sheets. What's the point? This is what is commonly referred to as a different proportion. In a simple sense, the specific gravity is how much gram of a cubic centimeter volume of matter has weight.

The proportion of iron was measured by 7.85 g/cm 3 and the proportion of aluminum was 2.7 g/cm 3, so the iron sheet of the same volume was lighter than the aluminum sheet. The proportion of silicon was measured to be 2.4 g/cm 3, which was smaller than the proportion of iron. We know that Ferrosilicon is an alloy made up of silicon and iron.

The same volume of two Ferrosilicon, wherein the more silicon content, that is, the less iron content is lighter; Conversely, the less silicon content, that is, the more iron content, the heavier. Thus, the more silicon in Ferrosilicon, the smaller the proportion; Conversely, the less silicon content, the greater the proportion.

People use this truth to draw a curve as shown in Figure Iii. In this way, depending on the specific gravity, you can see the amount of silicon in Ferrosilicon.

As you know from figure III, the proportion of 45 ferrosilicon is 5.14, the proportion of 75 ferrosilicon is 3.10, the proportion of 90 ferrosilicon is 2.57 and so on. In the production of Ferrosilicon, the carbon content of Ferrosilicon is analyzed quickly by using the characteristic of Ferrosilicon, and the method of measuring silicon content is called "specific gravity method".

This method is simple and fast, and has practical significance in production. Because Ferrosilicon also contains aluminum and calcium elements, their specific gravity is different from the proportion of silicon, such as the proportion of calcium 1.54 aluminum is 2.7, often affecting the accuracy of the determination of silicon content. Therefore, according to the raw material conditions and operating characteristics and other reasons, draw a revised curve, used to improve the accuracy of the determination of silicon content.