What Are the Properties of Zinc?
Zinc is a chemical element. Its chemical symbol is Zn. Its atomic number is 30. It is located in the fourth periodic table and group IIB in the periodic table of chemical elements. Zinc is a light gray transition metal and the fourth "common" metal. In the modern industry, zinc is an irreplaceable battery and is a very important metal. In addition, zinc is also one of the essential trace elements in the human body and plays an extremely important role.
Zinc (Chinese pronunciation: xn), its name " zinc" comes from
Calcining zinc ore or sphalerite in the air to obtain zinc oxide and then reducing it with carbon (lower purity);
Or the zinc oxide and coke are mixed and heated in a blast furnace to cause 1373K ~ 1573K to distill the zinc (purity about 98%);
Or use
Zinc quilt
Zinc is also known to man since ancient times.
There are few single zinc mines of zinc, and the zinc mine resources are mainly
After the financial crisis, countries launched rescue plans, major central banks also gradually released liquidity, the United States continued to widen, and China launched four trillion to promote economic recovery. Sufficient liquidity made financial attributes occupy a major position and pushed up zinc prices in 2010. Go higher. "2013-2017 China Zinc Industry Competition Situation and Investment Development Forecast Report", the global economy is stabilizing, the United States is slowly recovering, and the market's expectations for QE3 exit are gradually increasing. If the US economic policy changes, the US dollar will strengthen and zinc Price is greatly affected by it. But it is also worth noting that the economic recovery has also brought demand recovery to a certain extent. The game of the two attributes will jointly determine the future trend of zinc prices.
After the U.S. financial crisis, continued economic easing promoted economic and employment growth. Despite the diminishing marginal utility of monetary easing, it can be seen that the low growth rate of US GDP growth and the slow improvement in the employment market indicate that the US economy is improving Weak recovery. The recovery of the US economy and the recovery of the real estate market have driven the demand for zinc, but this weak recovery is still relatively fragile, and the demand for zinc is also limited.
grade | Zn (%) | Cu (%) | Pb (%) | Fe (%) |
1 | 55 | 0.8 | 1.0 | 6.0 |
2 | 53 | 0.8 | 1.0 | 6.0 |
3 | 50 | 1.0 | 1.5 | 8.0 |
4 | 48 | 1.0 | 1.5 | 12.0 |
5 | 45 | 1.5 | 2.0 | 12.0 |
6 | 43 | 1.5 | 2.0 | 12.0 |
7 | 40 | 2.0 | 2.5 | 14.0 |
8 | 40 | 2.0 | 2.8 | 18.0 |
About half of all zinc consumption in the world is used for
China's lead and zinc industry production layout, based on lead and zinc
Invasion route: inhalation, ingestion.
Inhalation can cause thirst, dry cough, headache, dizziness, high fever, and chills. Dust is irritating to the eyes. Oral stimulation of the stomach
1. Store in a cool, dry place, away from fire and heat sources.
2. with
Physiological functions of zinc
Maintain normal appetite
Zinc deficiency can lead to decreased taste, anorexia, partial eclipse, and even abnormal food.
Enhance human immunity
Zinc is a nutrient for the development of the thymus of the immune organs. Only sufficient zinc can effectively ensure the development of the thymus, properly differentiate T lymphocytes, and promote cellular immune function.
Zinc can help growth and development, intellectual development, and improve immunity. Lack of zinc can seriously affect our body, especially growth and development. Therefore, adequate zinc supplementation is necessary for growth and development and intellectual development. In addition to eating a balanced diet, don't forget to supplement your nutrition properly.
Symptoms of zinc deficiency
child
Taste disorders: anorexia, partial eating or unusual eating;
Skin disorders: susceptible to oral ulcers, damaged wounds are not easy to heal, adolescent acne, etc .;
Poor growth and development: short and thin;
Decreased immunity, frequent colds and fevers;
Pregnant woman
Increased pregnancy response: acidophilus, worse vomiting
Intrauterine fetal growth retardation: leading to premature and low birth weight infants
Increased birth complications: prolonged labor, miscarriage
Recommended zinc intake
| age) | RNI (mg) | UL (mg) |
| 0 ~ | 1.5 | |
| 0.5 ~ | 8.0 | 13 |
| 1 ~ | 9.0 | twenty three |
| 4 ~ | 12.0 | twenty three |
| 7 ~ | 13.5 | 28 |
| men and women | men and women |
| 11 ~ | 18.0 15.0 | 37 34 |
| 14 ~ | 19.0 15.5 | 42 35 |
| 18 ~ | 15.0 11.5 | 45 37 |
| 50 | 11.5 11.5 | 37 37 |
| Pregnant woman | | 35 |
| Early | 11.5 | |
| Mid-term | 16.5 | |
| Late | 16.5 | |
| wet nurse | 21.5 | 35 |
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