Rendering is the process of melting down animal tissues and fats into usable final products. This process in conducted on a large scale to meet the need for fats and tallow for several leading global industries such as cosmetics, cleaning chemicals, pharmaceuticals, oils, animal feed, candles, and bio-diesel, to name a few.
The process of rendering requires the animal tissues to be finely chopped or ground and then melted down using medium to high heat. For non-edible rendering, the tissue is heated in a steam-jacketed vessel which removes moisture from the product. When the moisture is removed the fat is released from the cells where it melts down into a drain and is collected for use. The remaining tissue is then pressed so any remaining fat can be dredged out of the material. The fat-less remains are then ground up and used to make meat and bone meals. [Read more…]