Carbon dioxide is a colorless, odorless, non-irritating, weakly acidic gas that is denser than air and tends to accumulate in unventilated shafts.

Carbon dioxide is often acutely poisoned, and it quickly falls into a coma within a few seconds after exposure. If it cannot be rescued in time, it can cause death.

First aid treatment

1. Quickly drag the poisoned person out of the poisoning scene. The rescue personnel must wear an oxygen-proof and anti-virus mask. In the emergency condition without such equipment, at least under the protection of compressed air, rescue quickly to ensure its safety.

2. After the emergence of the field, if respiratory and/or cardiac arrest is found, resuscitation should be performed in time; if there is no need for resuscitation, oxygen therapy should be selected according to the condition of CO poisoning; if there are conditions for severe poisoning, hyperbaric oxygen therapy may be selected. .

3. Repeat the use of respiratory stimulants (nicaramide, lobeline, diphenolin) regularly, if necessary, every half hour, or naloxone 0.4 ~ 0.8 mg, intravenous injection every 2 hours To antagonize respiratory depression and failure, and to facilitate the discharge of CO2 from the body.

4. Refer to toxic encephalopathy for anti-cerebral edema, anticonvulsant and other treatments. High-heat hibernation therapy and physical cooling, antipyretic drugs have poor efficacy. And pay attention to prevention and treatment of secondary infections and electrolyte imbalance, acid-base balance disorders, to support treatment.

Precaution

1. Ventilation and detoxification, especially after blasting, it is necessary to strengthen ventilation, and it will take 15 minutes to enter the blasting site. When entering a long-distance unincorporated shaft, it is necessary to check the concentration of oxygen and toxic gases in the roadway and take safety measures to enter.

2. When a person is found to be poisoned, the mine leader must be reported first, and the rescue team must be sent to the mine for rescue; or after reporting the leadership, take the ventilation and detoxification measures and wear the gas mask before entering the rescue.

3. Establish and improve appropriate sanitation facilities.

4. Do a good job in health check and environmental monitoring.

5. Educate employees to strictly abide by safe operating procedures and health systems.

Magnetic Polishing Needles

Different with Stainless Steel Shot or Steel Shot, Magnetic Polishing Needles is not used for shot blasting and it is used for grind which could help parts have a mirror surface. For some irregular shape parts, it also have a great effects. It is widely used for precision die casting parts for deburring, removing oxide film, rust removal treatment.