The main users of barite is petroleum and chemical industries.To the countries which petroleum industry is relatively developed, more than 50% barite production for oil and geological drilling,According to statistics, every drilling rig will consume one ton 30 meters barite powder,so bring greater consumption. In the chemical industry, production of various barium salt and barite have a fixed relationship between the consumption of raw materials and the barite consumption is also great.
Currently, the world production of barite upward trend will continue, but the growth rate of most of the world’s oil and gas industry depends on the project scale of drilling. According to the data , in 1996 the world barite production was 4.415 million tons , compared with an increase of 1.35% in 1995 . At present, China has become the world’s largest producer of barite , the annual output is 1.5 million tons , accounting for 34% of world production.There are other major producing countries, Mexico , the former Soviet Union, the United States, India, Turkey and Morocco.
Throughout the world barite market , China occupies an important position barite products.With annual export volume of 100 million tons, the total world exports around 60%. Should take full advantage of the current international market demand barite increased prices favorable opportunity to adjust the export product structure and expand the proportion of exports powdered products.To export less and earning more than the amount of direction.
World barite reserves of about 910 million tons , the world’s per capita consumption of 0.18 tons / person. At present, China barite reserves of about 140 million tons , about 0.13 tons per capita / person , according to the forecast , by 2000 , the annual demand for barite is about 750,000 tons , the annual average growth rate of 3.2% Therefore , the availability of resources barite mine life of approximately 70 years. This requires us to strengthen the barite resources seriously because it substitute difficult not rich resources , the proposed export should be limited to protect the barite resources.
Recently,somewhere in China,the police seized suspected perfusion barytes powder nearly a thousand chickens. Inspection by the local CIQ confirmed it is potting compound mainly barite powder, barium sulfate containing up to 66.63%.People can not help but worry that is it safe eating chicken was infused with barite? According to sources, to chickens perfusion barytes powder, mainly in order to increase the weight, from which illegal profits.
Barite barium sulfate is important minerals for the preparation of barium and barium compounds,containing about 65.7% of barium sulfate and 34.3% of the sulfur trioxide. In the early 19th century, people began to paint using barite as filler for oil and gas drilling mud weighting agent. Barium sulfate for the production of white pigments, fillers can be used in the coloring agent of rubber. When people are suspected to have gastrointestinal disease, doctors often recommend that patients do gastrointestinal contrast,patients swallow the toothpaste-like shape of the contrast agent is barium sulfate. Since man can swallow barium sulfate, then the chickens will produce barite powder is poured toxicity do?
- First, patients using barium sulfate contrast agent has reached the pharmaceutical purity standards and chickens were perfused barite powder or uncut state.
- Secondly, in nature,barite often coexist with barium carbonate mineral called Witherite, it’s chemical properties is different from barite. Barium compounds on human toxicity depends on its water solubility. Witherite is a soluble barium salt.
- Finally, Witherite enters the body, the skeletal muscle, smooth muscle and cardiac cause irritation and stimulant. Myocardial soluble barium salt by the toxic effects of myocardial stress and conductivity changes, severe poisoning can occur heart block, ectopic rhythm and ventricular fibrillation, the patient can die of cardiac arrest.
Law enforcement officers seized “barite chickens” on the highway for a trek from Guizhou to Chongqing.But came without the emergence of an unexpected death, from the “barite chickens” performance point of view,it does not appear barium poisoning. Clinically, the acute toxicity of barium minutes incubation period can be as short in most cases the incidence of 0.5-4 hours.
Barite powder for each live chickens to hundreds of grams of weight gain, but also ensure that chickens accidental poisoning does not occur, the perpetrators must be done in advance of the pre-study and observation. In view of this, the fraud is even worse. Nature of the material is also a lot of high specific gravity, for money wanton act, of course, the victims are innocent consumers.
The company applied for the Gundaroo tenement with a view to expand its base metals exploration portfolio within the East Lachlan Ford belt, and said on Thursday that exploration would start later this year.
The Gundaroo project is located some 10 km west of Centrex’s existing Gouldburn base metals joint venture (JV) with China’s Shandong 5th Geo-Mineral Prospecting Institute.
In addition to the Gundaroo approval, the company was also granted a new 250 km2 type two industrial minerals licence overlaying the current mineral tenements of the current Gouldburn JV, where both barite and lateritic bauxite occurrences have been identified.
Centrex told shareholders that it would explore for these minerals, in conjunction with the upcoming A$2-million base metals exploration programme being funded by JV partner Shandong, to earn a 35% interest in the JV.
The completion of the JV was subject to both Chinese and Australian government approvals, which were expected later this year.
Zambia plans to cede control of a company that holds minority stakes in the country’s mines as Africa’s biggest copper producer takes a further step back from an era of nationalisation that began in the 1970s and slashed metal output.
The Southern African nation will probably cut its 87.6% stake in ZCCM Investment Holdings (ZCCM-IH) to less than 50%, says Mines Minister Christopher Yaluma. Cabinet will decide on the size of the divestment, he adds.
“We are not looking back, but looking forward and getting the mining houses totally into private hands,” he says. “We have gone past nationalisation and we are not going back.”
ZCCM once dominated the Zambian copper industry as the State mining company following the nationalisation of Anglo American assets in the 1970s. The country began selling the assets in the late 1990s after annual production slumped to 250 000 t in 1998 from 630 000 t in 1975. In 1999, Anglo bought back the biggest mines at a time when ZCCM had debts totalling $800-million. Those assets are now mainly owned by Vedanta Resources.
Nationalisation cost the country an estimated $45- billion in potential income, according to a March report by Eunomix, a research company.
ZCCM-IH holds minority stakes in the local units of GlencoreXstrata, First Quantum Minerals and Vedanta Resources, following State asset sales that began in the 1990s. Zambia’s mines lost more than $1-million a day under government ownership, according First Quantum, the country’s biggest copper producer. Output of the metal fell 65% to 263 000 t in 1997 from 1973, Chamber of Mines of Zambia figures show, before rebounding to more than 800 000 t last year.
ZCCM-IH plans to sell stock to existing shareholders to repay debt to government and invest in new developments, the Lusaka-based company says. The State does not intend to increase its ownership through the exercise.
Most minority shareholders own their stock through the NYSE Euronext, in Paris, accord- ing to ZCCM-IH, which estimates the company’s asset value at $387-million. An independent company completed a valuation of the state-controlled miner in september and is yet to announce the results of the exercise.
JOHANNESBURG (miningweekly.com) – Mining major Anglo American’s copper production increased by 32% to 207 300 t in the three months ended September 30, driven by improved operating performances and grades at its Los Bronces and Collahuasi operations.
n at the group’s Collahuasi copper mine, in Chile, increased 130% year-on-year to 63 600 t for the third quarter.
“This significant increase reflects the ball mill breakdown and semiautogenous mill (SAG) 3’s underperformance in 2012. Following the SAG 3 stator motor replacement and repowering in the second quarter of this year, mill throughput has increased, with performance for the quarter in line with expected capacity,” Anglo said in a statement on Friday.
Further, production at the group’s Los Bronces copper mine, in Chile, increased by 22% year-on-year to 106 400 t, owing to the continued strong performance of the Confluencia plant.
The miner added that reduced mine congestion and debottlenecking at Los Bronces’ primary crushers had improved continuity of ore supply and throughput at both processing plants, while improvements implemented in the Confluencia milling and flotation processes had also resulted in higher recoveries.
Meanwhile, Anglo’s export metallurgical coal production increased by 9% to a record 4.9-million tons in the quarter, owing to continued longwall performance improvements, which offset the planned closure of the group’s Aquila coal mine, in Australia, which was put on care and maintenance at the end of July.