INTRODUCTION
How to Utilize Crop Straw
Cropstrawisapreciousbiologyresource.However, as aresultofthetraditional idea and limitation of technology, the many-sided utilization of crop straw is rather low. Nowadays, no matter developed or developing countries are paying attention to waste recycling. During the harvest time, there is abundant crop straw or agricultural waste. How to utilize these crow straw, a precious resource, is a topic with significant meaning.
Make it into feed pellets. The feed livestock or aquatic animals eat is usually made of grains and crop straw. First crush grains like corn, wheat or rice and crop straw like corn stalk and cotton stalk into powder. This process is achieved by hammer mills. Grinding is beneficial for the mixing operation and can improve the nutritional utilization of raw materials. Generally, as for the powder, the finer the better. The second step is blending. Blending is the process of mixing proportioned raw materials together to obtain a homogeneous mixture. Additives or micro ingredients are added in this step. After mixing raw materials, feed it into the hopper of feed pellet machine. In the pellet chamber, raw materials are compressed and become shaped pellets. You will get high quality animal feed as long as you pay attention to the tips during the process and choose suitable machines.
Make it into biomass fuel. To better use crop straw as fuel, you can process it into biomass briquettes or charcoal briquettes. Before using briquetting technology, you should crush crop straw into small particles whose sizes are less than 5*5mm, then dry the crushed materials by air flow or rotary dryer and decrease the moisture content to about 10%. The next step is briquetting. Briquetting is to press crushed and dried crops straw or wastes into solid briquettes by high pressure and temperature without any binder added. If you only use biomass briquette machine, what you get is biomass briquettes which are renewable fuel having much advantages like high burning efficiency. It is not complicated to make charcoal briquettes too: one way is to deliver the biomass briquettes processed by biomass briquettes machine into carbonization furnace and anther way is to use charcoal briquette machine which has a carbonization device. As long as being carbonized, biomass briquettes would become charcoal briquettes. Compared to biomass briquettes, charcoal briquettes have higher thermal efficiency and greater combustion value.