economic new lump coal mining equipment sell in aba

heavy mining: latest news & videos, photos about heavy mining | the economic times - page 1

"In an ongoing process of modernising its ageing heavy earth moving machinery fleet, Coal India Ltd (CIL) on Wednesday closed a deal valued at nearly Rs 1,462 crore for purchase of 11 20-cubic metre electric rope shovels," the PSU said in a statement.

Fighters from the Islamic State West Africa Province (ISWAP) attacked the convoy with rocket-propelled grenades on Sunday in the town of Mainok outside the regional capital Maiduguri before storming the nearby base, two military officers told AFP on condition of anonymity.

"Ministry of Mines will work towards creating a sustainable scrap recycling ecosystem...National non-ferrous metal scrap recycling framework, 2020 seeks to use life cycle management approach for better efficiency in mineral value chain process," the mines ministry said.

Demand for medium and heavy commercial vehicles (M&HCVs) an indicator of economic health has improved sequentially since July 2020 and the trend is expected to continue in the current quarter, said Anuj Kathuria, chief operating officer at Ashok Leyland.

The rating agency says while medium & heavy commercial vehicle (MHCV) sales are unlikely to recover before fourth quarter of next financial year, that of the light commercial vehicles (LCVs) have started to recover as they provide the last mile connectivity and because of increased e-commerce activities.

The resources will be utilised to introduce new technology and products, extend distribution network and towards digitalisation efforts. Daimler India has so far invested Rs 9,560 crore in the country.

Mazhar Mohammad of Chartviewindia.in said, in next trading session, if the index settles below 12,800 levels on closing basis, then it may kick in the much needed corrective downswing with initial targets of 12,600 levels.

NINL is a joint venture company, in which four central PSUs -- MMTC, National Mineral Development Corporation (NMDC), Bharat Heavy Electricals Ltd (BHEL) and MECON -- and two Odisha government companies IPICOL and Odisha Mining Corporation (OMC) are shareholders.

Coal quality deteriorates when stacked at yards and is prone to fire when stocked for long, leading to heavy losses. Overburden removal increases mine stability and is necessary for ramping up production at open cast mines which accounts for 95% of the companys production.

Law and order issues have delayed land acquisition, which may delay projects and pose obstacles for the company in achieving its target of producing 1billion tonnes of coal by 2024. It is expected to produce 610 million tonnes this year. The target for 2020-21is 750 million tonnes.

Neelachal Ispat Nigam Ltd (NINL) is a joint venture company, in which four central PSUs -- MMTC, National Mineral Development Corporation (NMDC), Bharat Heavy Electricals Ltd (BHEL) and MECON -- and two Odisha government companies, IPICOL and Odisha Mining Corporation (OMC), are shareholders.

minerals: latest news & videos, photos about minerals | the economic times - page 1

With the help of firms that are professionals in the field, the government of Chhattisgarh has decided to explore new places in the state that contain reserves of precious minerals such as diamonds, gold, silver, and copper.

The industry needs to invest for the future by exploring and leveraging operational technology initiatives, enhancing productivity and efficiency, and engaging with stakeholders for shared prosperity," PwC India mining and metals leader Yogesh Daruka said.

Varaha-1s adventure is part of Indias gearing up to hunt for treasures on ocean beds. It is also contemplating engaging the private sector to make equipment, carry out exploration and even venture into commercial exploitation as and when it is permitted.

"MOIL has signed a tripartite MoU (memorandum of understanding) with the Government of Madhya Pradesh and the Madhya Pradesh State Mining Corporation Limited (MPSMCL) to explore the possibilities of manganese ore mining in Balaghat, Jabalpur, Jhabua, and Chhindwara districts," it said.

Were seeing a lot of those miners moving out of China to other places, Changpeng Zhao, the CEO of Binance Holdings said in an interview at the Qatar Economic Forum on Tuesday. Some of them are sending their mining equipment to overseas. Theres big shipments.

The production level of important minerals in April 2021 includes, coal 516 lakh tonnes, lignite 31 lakh tonnes, natural gas (utilised) 2,583 million cubic metre, petroleum (crude) 25 lakh tonnes, bauxite 16.61 lakh tonnes, chromite 6.36 lakh tonnes and gold 120 kg.

The petroleum ministry has proposed amendments to existing law to include cleaner sources of energy like hydrogen within the definition of 'mineral oils' for which the government gives out licence to explore and produce.

The Centre said the second tranche of commercial coal mines' auction has received tremendous response which is reflected in around 50 mine specific tender documents being purchased by bidders till date.

The announcement has come at a time when steel is trading at an all-time high. In May 2021, the steel makers raised prices of Hot Rolled Coil (HRC) by Rs 4,000 to Rs 67,000 per tonne and Cold Rolled Coil (CRC) by Rs 4,500 to Rs 80,000 per tonne.

The expansion project of Ferro Alloys entails adding one more furnace of 36 MVA (with capacity addition of 50,000 MT pa) at its existing facility located at Vizianagaram, near Visakhapatnam, with an estimated capex of Rs 135 crore, the filing added.

NMDC (National Mineral Development Corporation), under the Ministry of Steel, is India's single largest iron ore producer, presently producing about 35 MT iron ore annually from its three fully mechanized mines located in Chhattisgarh and Karnataka.

The Union Cabinet had last week cleared amendments to the Mines and Minerals (Development and Regulation) Act to allow sale of 50% coal from captive mines, which are allotted prior to the commercial coal mining auctions.

addicted to coal, northern china goes cold turkey

SHANXI, North China For decades, 76-year-old Zhang Peiying and the more than 800 households in Beiwayao Village have depended on coal to power their daily lives: to cook, bathe, and keep warm during the coldest months. As a result, winter in Chinas coal heartland means not just icy winds and subzero temperatures, but also frequent bouts of thick, toxic smog.

Since August, workers have been tearing down chimneys and connecting gas ducts to villagers newly bought appliances in Zhangs case, two stark white radiators that were bolted to her bedroom wall a few days ago. For now, theyre still cold to the touch, but beginning Nov. 1, millions of people in the region will say goodbye to coal in favor of cleaner alternatives.

Since Chinas cabinet released the Air Pollution Prevention and Control Action Plan in 2013, the country has introduced a host of measures to clean up its skies, from cutting excess industrial capacity and promoting electric vehicles, to taking environmental protection into account when evaluating local officials job performance. At the recently concluded 19th National Congress of the Communist Party, the words lucid waters and lush mountains are invaluable assets were added to the Party constitution.

In February, the Ministry of Environmental Protection announced a campaign to improve northern Chinas air quality. It listed Taiyuan, which administers Beiwayao, as one of 28 cities to heavily restrict their coal consumption; now, all of Taiyuans 269 villages are cutting out coal with some switching to gas, others to electricity.

Beginning this month, Taiyuan has banned the sale, transportation, and use of coal except at several heat and power plants; in Beiwayao, the ban will not be strictly enforced until the gas is turned on. The ministrys campaign also includes limits on diesel fuel, regular central government inspections, and emissions caps for the steel and cement industries. One of the campaigns goals is for Taiyuans air pollution from October 2017 to March 2018 to drop by 25 percent from the same period the previous year.

In Shanxi, such initiatives look to transform not only peoples way of life, but also the local economy. With almost 40 percent of Chinas total coal reserves, the province is home to the second-largest mining industry in China, a crucial source of energy that has powered the countrys economic revival. The provinces fossil fuel consumption per unit of GDP is among the highest in the nation, and 80 percent of Shanxis energy comes from coal. The city emblem of provincial capital Taiyuan depicts a red coal fire burning above coal-black soil.

For as long as she can remember, Zhangs life has revolved around the black rocks. The daughter of a coal miner, she was born in Lliang, a neighboring city to Taiyuan. When she was little, she collected discarded coal shards that her family used to heat their kang, a raised platform for sitting and sleeping that was once common in northern Chinese houses.

Unwittingly, Zhang is an expert on the different types of coal. The coal from my hometown is good in quality, but burning it produces too much smoke, she says, waving her hands as if to fan away fumes. But the coal she grew up with is better than what she has used since 1962, when she married and moved to Beiwayao.

In the courtyard of Zhangs home a square compound typical in the northern Chinese countryside a hawthorn tree bearing mellow red fruit stands near the gate. Underneath it sits a small rubber bucket filled with a mixture of coal slurry and loess that Zhang puts into the familys coal stove bit by bit throughout the day. At times, the stove fills the house with smoke, dust, and ash, and Zhang must clean the chimney regularly to keep it from clogging up. Its very inconvenient, she says. But its been decades, and Im used to it.

Together, the heavy industries and millions of households in Shanxi burned over 371 million tons of coal in 2015, more than half the total coal consumption of the U.S. Stoves like Zhangs are blamed for contributing to hazardous concentrations of PM 2.5, pollution particles that are small enough to enter the bloodstream.

Unregulated residential consumption of coal contributes around 40 percent of the PM 2.5 in the city, says Song Li, director of the regional pollution control center at the Taiyuan Environmental Protection Bureau. In 2016, the average PM 2.5 concentration in Taiyuan was 66 micrograms per cubic meter more than six times the World Health Organization limit for healthy air and almost double the national standard. With the ban on coal, Song says, the municipal government expects to see a 90 percent reduction in coal consumption and a 40 percent drop in PM 2.5 levels, which would outperform the target set by the environmental ministry.

Two kilometers west of Beiwayao, in Zhaojiashan Village, 33-year-old Zhao Xiaoxiao hopes the coming winter wont be as bad as the last, when large swathes of northern China repeatedly suffered levels of smog considered severely polluted by Chinese government standards. In Taiyuan, December and January saw only four days when the air pollution dipped to excellent, and on the worst days, smog levels exceeded the maximum possible reading on Chinas air quality index, according to numbers from Aqistudy.cn, a pollution data website run by a nongovernmental organization.

In Zhaojiashan, the government installed a central boiler powered by electricity to pump hot water to all 68 households in the village. Before, Zhao would wake up at 6 a.m. to fire up the familys own coal boiler. The ashes floated all over the room every morning when I moved coal into the house and put it into the boiler, Zhao tells Sixth Tone.

Although the electricity for Zhaojiashans boiler will likely come from a coal-fired power plant, this method should still be more environmentally friendly, says Xie Hongxing, director of the Innovation Centre for Clean-air Solutions at Clean Air Alliance of China, an environmental think tank that promotes clean and sustainable development. [Household stoves] do not contain any cleaning features and therefore emit much more pollution than burning coal at a thermal power station, he tells Sixth Tone.

Coal runs like a seam through Zhaojiashans history. The village used to operate its own coal mine that employed almost every male villager. In 1983, the risk of the land caving in meant the whole village had to be relocated. Zhaos husband worked in the village mine from his teenage years until 2008, when the mine was shut down as part of a government drive to close smaller and unsafe operations.

The current policy changes will cost even more Shanxi residents their coal jobs. Jiang Chunhai, an economics professor at Dongbei University of Finance and Economics in northeastern Chinas Liaoning province, has studied the economic and social effects of local restrictions on coal. He acknowledges the environmental benefits but warns that a ban on coal consumption can bring shocks to the local economy. In light of Shanxis dependence on coal, Jiang tells Sixth Tone, [It] will face greater pressure in terms of GDP, government revenue, and employment compared to other provinces.

At his rental house at the foot of the Xi Mountains, northwest of Taiyuan, Su Jianhong shovels coal from his yard into a three-wheeled truck. For 20 years, Su and his wife sold the black rocks all over Taiyuan, which earned them 80 yuan ($12) a day in the winter. But that occupation is now illegal. The couple plan to move back to their hometown near Lliang and either sell vegetables or work in construction. One has to find a way to make a living, Su says without much confidence.

Higher up in the Xi Mountains, miners emerge from the Ximing coal mine after their morning shift. With faces obscured by black dust, they head to the mines public bathroom. There, hot water comes from a decades-old coal-powered boiler operated by 64-year-old Zhao Baogui. We wont use this boiler anymore beginning in November, he says, pointing to a group of workers installing high-voltage wires near the bathroom for a new electric boiler.

During his noon break, 35-year-old miner Shi Liming sits outside enjoying the sunlight next to the train tracks that carry him and his colleagues underground. He has been working at the mine for 12 years, following in his fathers and grandfathers footsteps. The ban on coal makes sense to me, Shi says. Its good for the environment and the next generation. Confident that coal will remain a crucial source of energy, hes not worried about losing his job. The coal industry will always be necessary, he says.

Coal has long been central to Shanxis way of life, and many locals arent confident that the new technologies will be an improvement. Although Zhaojiashan villager Zhao Xiaoxiao believes electricity will prove cleaner than coal, she doubts it will be warmer. The structure of our houses is different from apartments in the city theyre not well-insulated, she says. In the winter, temperatures in the area drop as low as minus 20 degrees Celsius.

Wang Mingsheng, head of Zhaojiashan Village, heard the same worries at a public briefing on the central boiler project in March. The manufacturer of the boiler said the temperature inside peoples homes should be able to reach 25 to 26 degrees Celsius, Wang says. But we wont know until we actually use it.

Another concern is cost: Natural gas is up to three times more expensive than coal. Beiwayao resident Zhang is a thrifty farmer. Using gas will be cleaner, she says, sitting next to the radiators that she bought secondhand to save money. But, Zhang adds, Nobody has told me how much the heating bill will be. Her family used to pay less than 1,000 yuan on average for coal during the five coldest months of the year.

According to Song of the Taiyuan Environmental Protection Bureau, there will be subsidies for households that switch to cleaner energy. Song cites an estimate from the gas supplier that says families will use an average of 2,000 cubic meters for the entire cold weather season. Based on this figure, the government will cover half of the cost for natural gas consumption below 2,250 cubic meters. Beyond that, residents will have to pay the full 2.26 yuan per cubic meter. We will try to keep the cost no higher than that of using coal, says Song.

1/6 Workers remove a chimney from a rooftop in Beiwayao Village, Taiyuan, Shanxi province, Oct. 19, 2017. Fan Liya/Sixth Tone 2/6 A plastic gas pipe under construction is seen outside Beiwayao Village, Taiyuan, Shanxi province, Oct. 17, 2017. Fan Liya/Sixth Tone 3/6 A gas meter waits to be connected to a pipe in Beiwayao Village, Taiyuan, Shanxi province, Oct. 19, 2017. Fan Liya/Sixth Tone 4/6 Coal is stored inside hollowed-out stacks of wooden pallets on a street in Dajingyu Village, Taiyuan, Shanxi province, Oct. 18, 2017. Fan Liya/Sixth Tone 5/6 Wang Mingsheng, head of Zhaojiashan Village, stands beside the villages new electric boiler in Taiyuan, Shanxi province, Oct. 17, 2017. Fan Liya/Sixth Tone 6/6 A taxi drives down Yingze Street, one of Taiyuans main roads, on a smoggy day in Shanxi province, Oct. 17, 2017. In 2016, Taiyuan replaced all of its more than 8,000 taxis with electric ones. Fan Liya/Sixth Tone

1/6 Workers remove a chimney from a rooftop in Beiwayao Village, Taiyuan, Shanxi province, Oct. 19, 2017. Fan Liya/Sixth Tone 2/6 A plastic gas pipe under construction is seen outside Beiwayao Village, Taiyuan, Shanxi province, Oct. 17, 2017. Fan Liya/Sixth Tone 3/6 A gas meter waits to be connected to a pipe in Beiwayao Village, Taiyuan, Shanxi province, Oct. 19, 2017. Fan Liya/Sixth Tone 4/6 Coal is stored inside hollowed-out stacks of wooden pallets on a street in Dajingyu Village, Taiyuan, Shanxi province, Oct. 18, 2017. Fan Liya/Sixth Tone 5/6 Wang Mingsheng, head of Zhaojiashan Village, stands beside the villages new electric boiler in Taiyuan, Shanxi province, Oct. 17, 2017. Fan Liya/Sixth Tone 6/6 A taxi drives down Yingze Street, one of Taiyuans main roads, on a smoggy day in Shanxi province, Oct. 17, 2017. In 2016, Taiyuan replaced all of its more than 8,000 taxis with electric ones. Fan Liya/Sixth Tone

1/6 Workers remove a chimney from a rooftop in Beiwayao Village, Taiyuan, Shanxi province, Oct. 19, 2017. Fan Liya/Sixth Tone

2/6 A plastic gas pipe under construction is seen outside Beiwayao Village, Taiyuan, Shanxi province, Oct. 17, 2017. Fan Liya/Sixth Tone

3/6 A gas meter waits to be connected to a pipe in Beiwayao Village, Taiyuan, Shanxi province, Oct. 19, 2017. Fan Liya/Sixth Tone

4/6 Coal is stored inside hollowed-out stacks of wooden pallets on a street in Dajingyu Village, Taiyuan, Shanxi province, Oct. 18, 2017. Fan Liya/Sixth Tone

5/6 Wang Mingsheng, head of Zhaojiashan Village, stands beside the villages new electric boiler in Taiyuan, Shanxi province, Oct. 17, 2017. Fan Liya/Sixth Tone

6/6 A taxi drives down Yingze Street, one of Taiyuans main roads, on a smoggy day in Shanxi province, Oct. 17, 2017. In 2016, Taiyuan replaced all of its more than 8,000 taxis with electric ones. Fan Liya/Sixth Tone

But the sudden increase in gas use could endanger supplies and drive up prices. Factories that have also been told to switch out their coal-fired boilers for gas models are already reporting continuous rises in operating costs. On Monday, Shanxi province called on local governments to not blindly promote the coal-to-gas project and ensure that there will be an adequate supply of gas before making the swap.

The switch in energy sources cannot be accomplished in a short period of time. There should be a gradual and orderly process, professor Jiang warns. [The local government] should not sacrifice results for the sake of progress.

Li Xiangfang, a professor of natural gas engineering at China University of Petroleum in Beijing, tells Sixth Tone that the cost of gas is already higher than it should be due to a lack of supply. In recent years, Chinas supply of natural gas has not been able to meet the rapidly increasing demand, Li says. China has become one of the worlds largest importers of natural gas, with 36.6 percent of its resources coming from abroad. The switch from coal to natural gas will boost the demand for gas, Li adds. The price of natural gas, especially in the countryside, should be further lowered.

On the streets of Beiwayao Village, some 200 workers are still busy installing the last gas pipes and radiators. The schedule is tight. We have a short time to prepare, Song says, adding that he is sure all the equipment will be in place before the end of the month.

Zhang is still waiting for a boiler to be installed in her house, but she isnt too worried about going without heat if the project misses its deadline. If the gas doesnt start flowing on Nov. 1, or if her new radiators dont prove a match for Shanxis frigid weather, Zhang says, I still have the coal stove for the cold winter.

cost investigation of the coalmine subsidence control technology of isolated overburden grout injection | springerlink

The isolated overburden grout injection is a control technology developed for coalmine subsidence issues. To rationally measure the cost input of applying this technique, this paper analyzes its cost composition according to activity-based costing method. Through utilizing this method, the process of grouting is divided into four major operation steps, in which each components cost sources is described. On this basis, a case study of grouting cost in Huaibei mining area is carried out. The key factor governing the total cost is determined to be the cost of grouting materials, which mainly depends on the distance between material producing site and the grouting station. Furthermore, the total cost of grouting decreases with the increase of coal reserves in an underground longwall working face. Specifically, a significant correlation exists when coal reserves of a longwall exceed 300 thousand tons, while this decreasing trend slows down. The research can facilitate both the evaluation of the applicability of grout injection technology and the optimization of its cost.

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experimental analysis of the dynamic effects of coalgas outburst and a protean contraction and expansion flow model | springerlink

As one of the most serious dynamic disasters in underground coal mining, coalgas outburst (CGO) leads to very high casualties and economic losses. To research the dynamic effects of disasters and further understand the mechanism of CGO, a large-scale physical simulation test system for coal mine dynamic disasters was used to conduct experiments. The results of this research indicate that there is an obvious choking phenomenon when the pressure drops in coal seams; the direction in which the pressure drop zone extends is consistent with the CGO cavern under the action of the geo-stress. The patterns of the two-phase flow of a CGO can be classified into three types: spurting flow, sparse flow and dense flow. There is a significant secondary acceleration process during the motion of pulverized coal in the roadway. The deposition characteristics of CGO coal exhibit a normal distribution in the roadway. In addition, the sedimentation of CGO coal has a good correlation with its particle size. In the initial stage of the CGO, the flow pattern in the roadway is dominated by weak disturbances, which are then superimposed as strong shock waves in the middle of the roadway. Based on the experimental results, a protean contraction and expansion flow model that contains a key structure for outbursts is proposed, and this model can properly describe the dynamic effects of the CGO based on fluid flow patterns.

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We gratefully acknowledge the financial support from the National Science and Technology Major Project of China (Grant No. 2016ZX05044-002) and the National Natural Science Foundation of China (Grants No. 51874055).

Zhou, B., Xu, J., Peng, S. et al. Experimental Analysis of the Dynamic Effects of CoalGas Outburst and a Protean Contraction and Expansion Flow Model. Nat Resour Res 29, 16171637 (2020). https://doi.org/10.1007/s11053-019-09552-y