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September 30, 2012

High gas prices ‘threat to WA economy’

Filed under: Uncategorized — sbmzhcn @ 8:39 pm

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WA gas prices are double those of the Eastern States and threaten the State’s economy and its business competitiveness, the head of a Parliamentary inquiry said today. Liberal MP Mike Nahan said WA’s gas prices had risen to levels that were high by national and international standards and were approaching levels paid in high-cost Asian markets.

“The domestic market is highly reliant on one big pipeline which has limited or no spare capacity and it’s regulated in such a way that imposes significant costs on new entrants, particularly smaller ones,” Dr Nahan said, referring to the Dampier to Bunbury natural gas pipeline. “This structure has led to an inefficient and poorly producing market.” He made the comments while releasing a bi-partisan report that recommends that the State Government push for an end to arrangements that allow the joint venturers in North West Shelf and Gorgon gas projects to jointly market their gas, as opposed to being forced to separately try to sell their cut of production into the domestic market…

NUM rejects 4% wage offer for mineworkers

Filed under: Uncategorized — sbmzhcn @ 4:45 pm

The National Union of Mineworkers (NUM) yesterday rejected the Chamber of Mines’ wage offer of 4%, which is well below the unihow to process tantalite mineralon’s opening demand of 14%. But analysts said this was unsurprising as wage negotiations often started with workers’ and employers’ expectations set wide apart. “We just hope that it (the offer) marks the beginning and that it won’t be too long before we get our 14%,” NUM general secretary and chief negotiator Frans Baleni said.

Labour analyst Ivan Israelstam said yesterday that employers and employees often started off with a huge gulf between their offers and demands. However, it was difficult to say where they would finally agree. “It’s a strategy but what’s behind it is not clear,” he said. Dr Elize Strydom, the chamber’s negotiator for the gold mining companies, said the 4% opening offer was part of proposals on the various demands made by the unions. She said the parties should note that production had been consistently in decline and the industry was facing high cost pressures such as electricity, wages, fuel, steel and other input expenses. But the gold price is at record highs and the NUM believes workers deserve a greater portion of company profits as a result…

Eagle Eye Metals drilling programs starts at Dankassa Gold Project, Mali

Filed under: Uncategorized — sbmzhcn @ 3:42 pm

Ehow much cost aata millagle Eye Metals Limited is pleased to announce the commencement of a concerted, multi-phase drilling campaign at its Dankassa Gold Project in Mali.

The Company has commenced a 2,000 metre reverse circulation (RC) drilling program to follow up significant results returned recently during the Company’s inaugural drilling program at the Kourouba Prospect. In parallel, the Company has embarked upon an aircore drilling program to further evaluate the 5,000 metre long gold in soil anomaly at the Kourouba Prospect. The aircore drilling will provide the Company additional geological and geochemical information that will significantly enhance the Company’s ability to target mineralised zones with follow-up RC drilling. The Company will also employ aircore drilling to begin to evaluate other high priority “regional” targets within the greater Dankassa Gold Project area. It is anticipated that approximately 6,000 metres of aircore drilling will be…

Riversdale seeks partner for Mozambique coal project

Filed under: Uncategorized — sbmzhcn @ 12:32 pm

RIVERSDALE Mining is inviting bids from glosilica sand crusher prices in india costbal miners for up to 50 per cent of a major coking coal deposit in Mozambique.

The miner is looking for the partner as it prepares to sign off on a binding $US800 million deal with a Chinese steelmaker for an adjacent project. It shows how miners are seeking to take advantage of a global demand boom for coking coal – a key ingredient in steelmaking – by attracting partners with mining expertise or the ability to build infrastructure such as ports to accelerate new mine developments. Interest in resource-rich southern Africa has intensified because it faces markets in China and India, where rapid urbanisation has prompted a surge in steel imports. It also reflects a growing appetite for risk among investors, as the region has suffered from political instability in recent years. Riversdale chairman Michael O’Keeffe said developing the Tete East licenses in Mozambique – estimated to contain at least…

Avanco Reports More Excellent Copper Results at Rio Verde, Brazil

Filed under: Uncategorized — sbmzhcn @ 6:16 am

The Company is very pleased to advise that it has received the outstanding assays for the recently completed 2,000m drilling programme at its Rio Verde Copper Project in Brazil.

The new results continue to support the presence of an exceptionally high grade copper zone and include the spectacular intercept of:

Further exceptional results returned for the shallow high grade zone are:

  • ARVD-85 7.25m at 14.26% Copper from 49.75m; Incl. 2.05m at 42.68% Copper from 49.75m
  • ARVD-86 3.0m at 10.85% Copper from 58.0m; Incl. 1m at 23.6% Copper from 58.0m
  • ARVD-87 1.0m at 24.5% Copper from 40.6m
  • ARVD-89 1.3m at 17.98% Copper from 63.0m
  • ARVD-92 18.0 m at 2.06% Copper from 25.0m; Incl. 3.0m at 6.75% Copper from 39.0m
  • ARVD-94 42.0m at 1.23% Copper from 13.0m; Incl. 0.65m at 35.88% Copper from 51.35m
  • ARVD-95 18.0m at 1.77% Copper from 20m; Incl. 2.0m at 4.57% Copper from 30.0m
  • ARVD-96 2.0m at 6.93% Copper from 46.0m
  • ARVD-98 12.0m at 1.97% Copper from 24m; Incl. 1.05m at 6.53% Copper from 25.4m
  • ARVD-102 11.0m at 1.02% Copper 4.0m; Incl. 2.0m at 3.32% Copper from 11.0m

Drilling results clearly demonstrate that the high grade zone extends to over 300m laterally and remains open along strike and at depth. Interpretation also indicates the likely presence of a second as yet undiscovered highly mineralised structure existing to the north of the current high grade zone.

The Company is extremely encouraged by these results and is now planning an aggressive +10,000m follow up drilling programme aimed at further extending and discovering additional high grade copper.

The high grade Antas South Deposit and the additional seven known copper prospects at Rio Verde and Sera Verde are considered high priority drill targets.

Drilling rigs will soon be mobilising to the Rio Verde Project for a +10,000m programme.

The exceptional results for earlier holes ARVD-69 to ARVD-83 included the spectacular intercept of:

  • 9 metres at 50.49% Copper from 18 metres.

The following results were also returned from current Antas South drill programme and reported previously as:

  • ARVD-72 6.15m at 8.06% Copper, from 38m; Incl. 3.85m at 11.23% Copper from 40.2m
  • ARVD-74 2.0m at 8.09% Copper from 28.0m; Incl. 1.0m at 11.83% Copper from 29.0m
  • ARVD-80 32.0m at 14.79% Copper from 1.0m; Incl. 9.0m at 50.49% Copper from 18.0m
  • ARVD-81 1.0m at 14.00% Copper from 44.0m
  • ARVD-69 1.0m at 10.89% Copper from 52.0m
  • ARVD-71 1.0m at 2.08% Copper from 17.0m; Also 1.0m at 2.35% Copper from 29.0m
  • ARVD-73 3.0m at 2.19% Copper from 28.0m
  • ARVD-78 6.0m at 2.46% Copper from 47.0m

The confirmation of very high grade copper structures at Rio Verde is a significant achievement and the exceptional results prove that the property is very prospective for the discovery of additional high grade copper zones. Diamond core and reverse circulation drilling rigs are currently being mobilised and drill targets are being prioritised.


The Company is in a strong cash position and is moving into an expanded drilling programme at its Rio Verde Copper Project. The Company also expects to be able to announce news on further acquisitions in the Carajas Province in the coming month.

Avanco is advancing permissions for the pending Vale SA iron ore drilling programme at the Company’s Trindade North Project. The Vale transaction has the potential to deliver significant cash flow to Avanco of between US$10,000,000 and US$40,000,000 and will shift the Company to a new operating level as a self funded junior in the Carajas. This process has begun with receipt from Vale of an initial payment illustrating the intension of both parties to quickly advance the exploration at Trindade North.

Newmont Sues Indonesia’s Merukh Over $300 Million Loan

Filed under: Uncategorized — sbmzhcn @ 12:28 am

Two units of Newmont Mining Corp., the world’s second-largest gold producer, are sgold grinding milling machine for sale ukuing its Indonesian partner and businessman Jusuf Merukh in Singapore for reneging on the terms tied to a $300 million loan agreement. Newmont Indonesia Ltd. and NVL (USA) Ltd. sued Merukh’s PT Pukuafu Indah and five of his family members in a bid to get legal proceedings in Jakarta dropped as agreed under the loan, according to papers filed with the Singapore High Court.

A closed hearing is scheduled for Jan. 28. Newmont and Pukuafu are among shareholders of PT Newmont Nusa Tenggara, which operates the Batu Hijau gold and copper mine on Indonesia’s Sumbawa Island. Pukuafu has filed five lawsuits in Jakarta against Greenwood Village, Colorado-based miner Newmont disputing the ownership of the mine. Pukuafu claims it’s entitled to a 31 percent stake while Newmont says it properly reduced its ownership…

September 29, 2012

Iron ore process flowsheet

Filed under: Uncategorized — sbmzhcn @ 8:35 pm

Recovery while focusing grades inside a mineral processing plant are influenced by several factors amongst which is grain size range with the liberated minerals, the share of all-natural fines in the ore and constraints imposed by concentrate end-users. The Nigeria iron ore processing plant in Nigeria presently produces a tail often containing as much as 22% iron minerals mostly natural fines inside the ore and fines made flow diagram of sand and gravel plantinevitably during mixture. This short article analyzed the existing circuit and undertook precise recovery tests around the tailing material utilizing straightforward hindered settling and floatation process for that recovery of a good iron minerals within the tailings. The outcomes showed that concentrates of grades which range from 41-62% might be attained together with the selected processes. Blending and dilution of the concentrates obtained in the recovery processes having a re-cleaned concentrate from the current plant still produced a supper concentrate of above 70% grade. It really is, as a result, proposed the flowsheet used for the recovery process be integrated using the flowsheet in the current plant to be able to boost recovery with the fine iron minerals lost for the waste.


Many elements influence the recovery of useful minerals from their ores. Some of such elements are the grain size range in the liberated minerals, the share of natural fines within the ore and constraints imposed by concentrate end-users. All of these together relate to the overall expense of concentration. Fine valuable minerals are usually tough to recuperate using their ores by processes aside from floatation, leaching and bio-recovery given that a superb number of the frequent mineral concentration processes employ size and density differences that are much more effective if the minerals are liberated at coarse size. Fine grain minerals could however be there within the processing stream because the ore is naturally fine-grained or they are inevitably made for the duration of comminution. Nevertheless, as a result of the problem in balancing these crucial aspects, recovery is typically poor especially for ore rich in area of fine mineral components.

The Nigeria iron ore deposit in Nigeria which features a total estimated reserve around 182.five million metric tonnes consists primarily of quartzite with magnetite and hematite. The deposit has been created to provide iron ore concentrates to ajaokuta steel plant as well as the delta steel plant, aladja, in Nigeria. Information from the processing plant and results of compositional analysis carried out on samples with the tailing material demonstrated that the existing flowsheet (simplified in figure-5) produces tailing item possessing amongst 20% to 22% iron minerals that are typically fine-grained. This really is deemed a substantial loss of value as shown by the comparison shown in table-1. Tables, two to 4 and figures 1 to 4 show the chemical composition and also other properties of the iron ore.

The Nigeria iron deposit is essential for that productive improvement of iron and steel industry in Nigeria though around the national scale you can find other silico-ferruginous formations which are intriguing from commercial and economic viewpoint especially the deposits of ajabonoko hill and choko-choko which are said to become related to those at Nigeria. To become given serious attention also is the income loss because of the unrecovered iron minerals in Nigeria iron ore process tailing. So, the objectives of this study was to establish in component, the reasons for fine grained iron minerals inside the process circuit using a view to designing an option circuit that can eradicate the problem of lack of these components or minimize the loss to much less than 10%, which is, 50% of the present value.

An analysis of ore properties along with the flowsheet in the current processing plant says fine-grained iron minerals can be found inside the process stream on account of the all-natural fine content material with the ore and those generate inside the process of comminution, stacking and reclamation in the blending yard. The analysis also indicated that the significant causes for lack of iron minerals within the plant incorporate: the choice of the mineral-specific, low intensity magnetic separation technique (lims) at the tail finish of the flowsheet, the crumbling and sloughing nature in the ore which tends to create fines even in the main crushing stage as well as a dewatering program most appropriate for coarse material.

Tribunal decision protects Rio Tinto’s integrated rail network in the Pilbara

Filed under: Uncategorized — sbmzhcn @ 4:41 pm

The Australiam sand machinery in india detailspage3n Competition Tribunal today handed down its determinations in response to the applications by Rio Tinto to review the decisions by the Federal Treasurer to declare the Hamersley and Robe River railway lines available for third party access under Part IIIA of the Trade Practices Act.

The Tribunal decided that a declaration should not be made with respect to the Hamersley line, finding that providing third-party access in this way would be “contrary to the public interest”. The Hamersley line is the principal artery of Rio Tinto’s integrated operations in the Pilbara, linking 10 of its 12 mines to the coast.

The Tribunal also decided that the Robe River line should be declared, but only until 2018, rather than for 20 years as the applicants wished.

Sam Walsh, Rio Tinto chief executive – Iron Ore and Australia, said today: “We are very pleased that the access application over our major Pilbara railway line has been refused.

“We have always been strongly of the view that our integrated operations would be severely disrupted if we were required to allow third parties to operate trains on our rail system,” he said.

“The Tribunal accepted our longstanding argument that rail flexibility was necessary to meet mine and port scheduling requirements and that access would ’cause significant delays in any expansion projects or innovations’ which Rio Tinto wishes to undertake.”

The Tribunal also found that the costs involved in providing access ‘had the very real potential of dwarfing whatever benefits might exist from avoiding duplication of lines.’

The decision is a significant one, covering many complex issues, and Rio Tinto is now considering it in detail.

Granite Quarrying crushing equipments

Filed under: Uncategorized — sbmzhcn @ 2:42 pm

In some places granite is used for gravestones and memorials. Granite is really a difficult stone and calls for ability to carve yourself. Modern methods of carving consist of making use ojaw crusher and ball mill to grind glassf computer-controlled rotary bits and sandblasting over a rubber stencil. Leaving the letters, numbers and emblems exposed around the stone, the blaster can produce practically any type of artwork or epitaph. Granite is actually a natural supply of radiation, like most natural stones. Nonetheless, some granites have been reported to possess greater radioactivity thereby raising some issues regarding safety.

Prime location for Granite Quarrying

The Nagarparkar igneous complex is exposed in the southern extremity from the Tharparkar desert near the Runn of Kutch, covering an area of around 1000 sq. km. It is encompassed by Indian territory on three sides, therefore forming an enclave of Pakistan inside India. The street from Hyderabad to Nagarparkar is metalled, which can be near about 475 kms, e.g. Hyderabad – Badin – Mithi – Islamkot – Nagarparkar. Likewise Nagarparkar can also be reached through Karachi, Karachi – Thatta – Sujawal – Badin – Mithi – Islamkot – Nagarparkar. Nagarparkar can be at the other extremity on the Coastal Highway, the newest road under building. Its earth function is done. It connects Karachi with Nagarparkar via Keti Bundar – Badin – Nagarparkar.

Nagarparkar area includes main Karunjhar hill and isolated hillocks of limited aerial extent, flanked by sand covered plains. The hillocks predominantly consist of 8 to 10 kinds of pink and grey coloured granites. The hillocks incorporate Voravoh, Churio, Berano, Parodharo, Dhedhvero, Dhingano, Chanida, Densi, Wadhrai, Ranpur and Kharsar, amongst other individuals.

Geologically there is certainly various Quaternary deposits, subordinate and scattered Juro – Tertiary sandstones and clays, overlying a basement that’s termed because the Nagar Igneous Complicated. It is split into Dhedvero fundamental intrusion, Nagar pink granite and Karunjhar grey granite.

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Coking coal mine could produce 1.5m tonnes a year

Filed under: Uncategorized — sbmzhcn @ 9:24 am

A limestone mining jobs in worldfeasibility study on a proposed mine in central Queensland has found it could produce more than 1.5 million tonnes of coking coal each year for 25 years. Aquila Resources is proposing a $320 million open-cut mining operation 24 kilometres north-west of Blackwater in the Bowen Basin.

The Washpool Hard Coking Coal project is expected to yield four million tonnes of coal a year with 1.6 million tonnes of high-rank hard coking coal. Aquila says the study shows the area is a major coking coal resource that would be economically and technically viable. It says the project has a predicted internal rate of return of 30 per cent and a mine life of 25 years. The company says construction of the mine could commence in 2012 with the first coal mined early the next year, subject to statutory approvals and further technical studies. Aquila Resources says it is moving forward with the project, finalising the terms of reference for an environmental impact statement.

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