Respiratory protection for mica manufacturing people

author：Tuk Hang home 2021-10-27 16:56:04

mica

Mica is a rock-making mineral with a hexagonal flake crystal shape and is one of the main rock-making minerals. Mica crystals have a layered structure inside, so they are flaky crystals, dominated by hexagonal flake crystals. Usually bound to granite pegmatites, mica-like hybrids contain a certain amount of free silica between quartz and feldspar. The main silicon contained in pure mica is the bonded Si02. The characteristics are insulation, high temperature resistance, the most used in industry is sericite mica, widely used in coatings, paints, electrical insulation and other industries.

Mica dust hazards

Mica dust contains different levels of silica, and the degree of fibrosis varies. Long-term inhalation of mica dust by production workers can cause mica pneumoconiosis. Mica is an aluminosilicate such as potassium, magnesium, lithium, etc. Mica pneumoconiosis is a genus of silicate pneumoconiosis. Long-term inhalation of high concentrations of mica dust can occur mica pneumoconiosis, the incidence and progression of mica pneumoconiosis are relatively slow, the onset of working age is more than 20 years, generally no specific signs and symptoms. Mica mining workers pneumoconiosis, due to the high content of free SiO2 in the contact dust, its onset of short working age, rapid progression of lesions, patients feel more symptoms, mainly chest tightness, shortness of breath, cough symptoms increase with the period of aggravation.

How to strengthen respiratory protection

First look at the national standards, in accordance with the national standards for respiratory protection products issued by the State Bureau of Quality Supervision, Inspection and Quarantine and the National Standardization Administration, the units producing dust masks must obtain a production and operation license in accordance with the law, and all the production technical specifications for dust masks must meet the corresponding standards. The standard stipulates the production and technical specifications of respiratory protective equipment, and has strict regulations on the material, structure, performance, filtration efficiency, appearance, respiratory resistance, detection method, product identification, packaging, etc. of the dust mask, and the material must be non-irritating to the skin, non-allergic, and the filter material is harmless to the human body; the structure of the dust mask should be convenient to use.

Respiratory protection for mica manufacturing people

Read on

The world's first good thing: reading! Qing Dynasty Champion Yao Wentian Study Couplet: Hundreds of years old homes in the world, nothing but accumulation of virtue; the first good thing in the world is still reading. Ancient and modern, Chinese and foreign, quite accomplished,

When you are very tired and tired, you should close your eyes and take a deep breath, tell yourself that you should hold on, do not deny yourself so easily, who says you have no good future, about tomorrow

When you are very tired and tired, you should close your eyes and take a deep breath, tell yourself that you should hold on, do not deny yourself so easily, who says you have no good future, about tomorrow

Just now, without paying attention, the wife roared with a word. She glared at me and said, "Come on, you roar again and I'll listen!" As a big boss, can I be afraid of this? So I took a deep breath and used all my strength

Large retrospective cohort studies confirm the risk of persistent and clinical sequelae after COVID-19 infection in people aged 65 years and older. After the acute phase of viral infection, adults aged ≥ 65 years of age appear persistent and long

Ms. Duan, 47 years old, is a company director, due to the death of her father's lung cancer, this time the physical examination showed a lung nodule 7mm, the local doctor recommended regular review, Ms. Duan is very worried, afraid of hair

Thank you very much for the attention and support of the fans, I continue to make a self-introduction today I am now working in Beijing Public Top 3A Hospital, chief physician of the Department of Pulmonary Diseases, currently working in: Chinese Physician Succession

#What strange things have you encountered around you #There are too many strange things, today I have time to say a strange dream, I am a man sleeping on the second floor, my parents sleep on the first floor, that night I dreamed next to it

In the past few days, I have been brushed by Wang Shiyue and Liu Xinyu. When I saw them, I knew what it was to be called a green plum bamboo horse and two small guesses; I knew that no matter how dangerous you were, I was always behind you; no matter how much you flew

BLG ruthlessly crushed TT, Puff tried his best to make a joke on Ucl debut, and New was crushed by the breathing brother 120 knives

Marriage is a gamble for simple and kind women. Even if the creature favors you, making you as beautiful as a peach and plum, as bright as a pearl, as pure as an angel, and meets a clever opponent with a deep heart, it will

The 120㎡ home hides a semi-open small book bar [look], a comfortable and comfortable world for two If the home can breathe, then it must be the charm of nature. [Shy] in self-media

Henan's seven deep breathing cities! How many have you been to? (1) Lushi County - Sanmenxia City (2) Linzhou City - Anyang City (3) Luanchuan County - Luoyang City (4) Neixiang County - Nanyang City (5) Sui County - Shangqiu

The following kinds of foods are liked by the lungs, and can usually be eaten appropriately, and can also help moisturize the lungs and clear the lungs, which is conducive to the dissipation of nodules. 1, drink more water is a key to the maintenance of lungs

Lung nodules are suitable for eating three kinds of vegetables Lung nodules may be caused by lung inflammation, lung tumors, rheumatic immune diseases and other different causes, patients not only need to seek medical treatment in time, but also drink daily

Zhu Yi, this girl, unforgettable! She has a pure face, and under the sweet smile, it gives people a feeling of coming out of the mud without staining! She's just a beauty who doesn't need much makeup

Chang'e Tang Li Shang Yin Mica screen candle shadow deep, the long river gradually fell Hyosung Shen, Chang'e should repent of stealing the elixir, blue sea blue sky night heart.

Motherwort, if it does not flower, looks a bit like mugwort and is difficult to distinguish. The aliases are many [Ma Sichun's smile] [Ma Sichun's smile] Yimu Artemisia, Yimu Ai, Safflower Ai

The prescriptions recorded in Sun Simiao's "A Thousand Golden Fangs" have been handed down by successive generations of physicians, collected by the people, imported from the Western Regions, India and other places, including ancient and modern Chinese and foreign medical prescriptions

Silica sand linear sieve screening output large quartz sand from the square swing sieve machine shaking body that is, the sieve body movement trajectory, square swing sieve can be called reciprocating sieve, the vibration force generated by its motor drive device

#Number One Weekly #Incredible Inventions: Who Invented the Capacitors Found in Every Appliance? In circuits, capacitors are used extensively, such as DC blocking, coupling, bypass, and filtering

Read the classic - Qi Ji's "Early Plum" Wanmu frozen, lonely roots warm alone. In the deep snow of the former village, a branch opened last night. The wind sends out the fragrance, and the birds peep out. Next year, as the law should be, first look at the spring platform. 《

Xu Ruiqing 2818: Flowers and grass are more timid, waiting for idle days and autumn pond rain. The lonely boat returns to sail to ride the wind shadow, and the stars sink in the morning and evening. Mica mist is more colorful, taking the cold of the next cang. Don't listen to dead branches

Mica is a rock-making mineral with a hexagonal flake crystal shape and is one of the main rock-making minerals. Mica crystals have a layered structure inside, so they are flaky crystals, dominated by hexagonal flake crystals

How to choose a good mica gasket? Find out

The most famous Bigfoot sightings, thousands of eyewitness reports have been reported by people across the United States and Canada over the past half-century. The Bigfoot Savage is one of the most enduring legends in North America

Rookie in mid- to large-sized cars? Mica battery technology, 730km range, wheelbase 3000mm, Lantu chasing light

A wonderful journey through the underworld uncovered countless treasures. Episode 1. Suddenly thunder flashed over Iceland, and Anderson desperately pulled out the seismic detector because it contained his brother's

Microsoft has re-introduced the Mica mica effect to the Edge browser, and the Win11 experience is even better

Qingqiao Morning Post, January 27|Thailand discovered 14.8 million metric tons of lepidolite ore

Analysis of Industry Leading Enterprises|Zhiyan-Mica Products Industry Encyclopedia【691】