There are many “three wastes” in titanium metallurgy, which cause serious corrosion to equipment and buildings, and are harmful to human bodies. Therefore, the treatment of “three wastes” in titanium metallurgy, the comprehensive utilization of wastes to benefit, protect the environment and improve the conditions of labor hygiene are A major event related to how quickly and economically we can build socialism is also a major event related to the health of employees and must be given sufficient attention.
There are metallic sodium, sodium powder and titanium powder in the sodium reduction process, and magnesium powder and titanium powder in the magnesium reduction process. These are flammable and explosive hazardous materials, and safety measures should be taken to prevent fire and explosion.
During the reduction operation, sodium powder, magnesium powder and titanium powder can ignite spontaneously by friction and release a lot of heat. There are these dusts in the air stage, which can explode in a certain concentration range. The minimum explosive concentration of magnesium powder in the air is 30 mg/L, while that of titanium powder is 0.036 mg/L. Therefore, special care must be taken when handling sodium metal and sponge titanium containing these dusts. The plant building of the titanium powder should be cleaned in time to prevent the accumulation of dust and cause an explosion. When the magnesium sponge titanium is taken out, due to the adhesion of the climbing wall drill and the magnesium powder, the friction can spontaneously ignite and even burn the titanium tuo. Therefore, before removing it, it is best to remove the wall-climbing titanium. In the crushing, packaging and transportation operations, sponge titanium containing diamond powder should be handled with care, and plastic drums and metal drums lined with plastic are not declared to be containers.
Once the titanium powder and sponge titanium are on fire, it is advisable to cover the fire with argon asbestos cloth, sand, etc., and not to use water and other fire extinguishing agents such as carbon dioxide and carbon tetrachloride; the burned and unburned sponge titanium should be quickly separated. Normally, fire extinguishers should be installed next to the positions where the magnesium method products are taken out, and fire extinguishing equipment should be equipped at the positions where the magnesium method products are crushed, mixed, and packaged, and when the sodium method products are dried, mixed, and packed.
Never let metallic sodium, sodium powder and liquid sodium come into contact with water. When sodium comes into contact with water, a violent hydrolysis reaction occurs and an explosion occurs at the same time. Therefore, the treatment of sodium must be kept away from water, and the equipment used must be kept dry. When cleaning sodium-containing containers and pipes, it must be confirmed that there is no sodium before washing with water. Avoid handling sodium in wet locations. Sodium-containing containers, pipes and valves must be strictly leak-tested, and liquid sodium can only be loaded and transported when it is well sealed to avoid accidents caused by the leakage of liquid sodium.
In working positions where sodium is stored, the operator must wear labor protection equipment to prevent liquid sodium from splashing and burning. In the event of a burn accident, the sodium that has adhered to the person must first be removed, used to wipe the wound clean with a cloth, and washed with boric acid in a timely manner or enter the hospital for treatment.
Transport and storage of titanium tetrachloride should be carried out in a sealed system. When having to operate in the atmosphere, titanium tetrachloride will hydrolyze and emit a large amount of hydrochloric acid when exposed to water or the atmosphere. Operators must wear gas masks, rubber gloves and boots and other labor protection products, and should not expose their skin. Keep the air in the operation room clear to prevent human poisoning and burns.