Technology for manufacturing pencil leads by waste plants

Abstract

The invention relates to the field of plant recycling, in particular to a technology for manufacturing pencil leads by waste plants. The pencil leads are prepared from the following components by weight ratio: 150-200 parts of plant raw material, 40-60 parts of flake graphite, 10-30 parts of a binding agent and 200-240 parts of water. The technology for manufacturing the pencil leads comprises the following steps: (1) heating the plant raw material to obtain an ash component; (2) grinding the flake graphite into fine powder, weighing the flake graphite powder together with the ash component and the binding agent, and then adding water into the weighed materials to obtain a mixture; (3) beating the mixture by a bar, and then carrying out extrusion molding; (4) after extrusion molding, enabling bar stock to enter a roasting furnace for roasting, and then enabling the product to enter a lead firing furnace for firing the leads; (5) carrying out oil immersion on the bar stock. After the technology is adopted, the bonding effect, breaking strength, wear resistance, writing smoothness and the like of the manufactured pencil leads are improved; furthermore, the cost is lowered, and the plant resources are reasonably utilized.

Description

technical field [0001] The invention relates to the field of plant reuse, in particular to a process for manufacturing pencil leads by using waste plants. Background technique [0002] Since the waste straw in rural areas is generally treated by crushing and returning to the field on the spot or harvesting and stacking, the stacking takes up a large area and is difficult to store, and it is easy to bring safety hazards when the weather is dry; Therefore, in some places, incineration is usually used for disposal, but incineration will cause a huge air pollution, which has been banned. [0003] A small straw pencil can help consume 6 grams of straw, while an ordinary wood pencil consumes 7.536 cubic centimeters of wood. According to relevant data from the China Pencil Association, the annual output of pencils in China is 7 billion. If 30% of them are made of straw, 12,600 tons of straw can be consumed. If the waste straw in rural areas can be fully utilized, then the phenomen...

AI Technical Summary

Problems solved by technology

At present, there is no timely and effective disposal method for blue-green algae after being salvaged. Most of them are stored on the spot, which produces a foul smell. In addition, the biogas slurry flows back into the river, causing serious secondary pollution to the water body.