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08.02.2019 (4504 Clicks)

World’s first all-in-one wet Processing System to be revealed at bauma

Industry-leading wet processing equipment designer and manufacturer CDE has announced plans to introduce its new Combo all-in-one wet processing plant to the global market.

08.02.2019 (3617 Clicks)

QRC welcomes South32’s $1 million NQ Flood Donation

The Queensland Resources Council (QRC) has welcomed a $1,000,000 donation by South32 to the North Queensland flood recovery.

07.02.2019 (3647 Clicks)

Implenia wins a Contract in Norway

New construction of a road between Sumstad and Hongsand | Tunnels as avalanche protection measures will ensure increased safety | Order volume of around NOK 230 million (around CHF 25 million)

07.02.2019 (4059 Clicks)

Strabag awarded Contract to build a Section of the D35 Motorway in the Czech Republic

• Construction of a 12.6 km long section between Opatovice and Časy
• Total contract value: CZK 3.38 billion (~ € 132 million)
• Project schedule: 44 months

06.02.2019 (3153 Clicks)

World-first autonomous Trains deployed at Rio Tinto’s Iron Ore Operations

Rio Tinto has successfully deployed AutoHaul, establishing the world’s largest robot and first automated heavy-haul, long distance rail network.

05.02.2019 (3241 Clicks)

Keliber appoints financial Advisors for the Lithium Project Investments

Keliber Oy has appointed Carnegie Investment Bank AB and Nordea Bank Abp as advisors for the equity financing for the Company’s mining and lithium chemical production project. Carnegie will be the Global Coordinator for the equity financing. Together with Company, the advisors will explore different financing options, including possibilities for an Initial Public Offering (IPO) through a listing of the Company’s shares, for the construction of the Lithium Project.

04.02.2019 (3119 Clicks)

Vale implements two Sediment Control Membranes on the Paraopeba River

Two of the three membranes that will protect the water withdrawal system of the city of á de Minas, on the Paraopeba River, are already in operation. The second barrier was installed yesterday (3/2/19) and the first, on Saturday (2/2/19). The third will be installed today (4/2/19), weather permitting. Since yesterday, weather in the region has been challenging, with rain and wind reported.

04.02.2019 (3700 Clicks)

Epiroc acquires US Water Well Drilling Equipment Distributor

Epiroc, a leading productivity partner for the mining and infrastructure industries, has acquired the assets of Noland Drilling Equipment, a U.S. distributor of water well drilling equipment and related parts, services and consumables.

01.02.2019 (4091 Clicks)

bauma 2019: Normet Ground Control and Construction Technologies

Sprayed Concrete

Today, the use of sprayed concrete in mines, tunnels and other civil engineering structures is an important and integral part of successful, highly productive, and safe rock support systems.

Normet’s Tamshot AF range of high performance alkali-free accelerators for sprayed concrete applications, have been formulated for improved fast-setting and safer performance over standard sulphate based accelerators. The new generation set accelerators, both stable suspensions and clear solutions, make site-handling logistics and longer term stability more favourable. They also bring the added benefit of better reactivity with the decreasing cement quality available to the markets these days.

Normet’s TamCem range of superplasticiser technologies have been formulated to give exceptionally high water reduction based on customised blends of specific polycarboxylate copolymer technologies. These superplasticisers will usually provide an open time of 3 to 6 hours. Added open time often requires the use of Tamcem HCA – a hydration control admixture. Without hydration control technology, the use of modern day sprayed concrete would be very challenging. Normet’s new Tamcem HCA is a very effective concrete hydration control admixture added at the batching plant. By adjusting the amount added, the “open-time” of fresh concrete can be extended dramatically anywhere from 4 hours to 2 days! This flexibility gives you complete control, and the sprayed concrete can be awakened immediately upon the spraying of our TamShot AF range of set accelerators.

Microfine Cements

Normet is at the core of modern technology with our comprehensive range of microfine and ultrafine cements, permitting contractors to undertake their works efficiently and effectively with products developed specifically for the chosen application. Our range of fast setting MFC grades for example used predominantly for pre-excavation grouting (PEG), offer time savings in the tunnel excavation cycle, ultimately contributing to lower overall project cost.

Normet’s ultrafine cements (UFC) have been designed for ground engineering applications where superior penetration into soils or greater reduction in rock hydraulic conductivity is required. TamCrete microfine cements are finely ground Ordinary Portland based products for pre and post excavation grouting. The superfine particle size, together with the addition of TamCem Superplasticiser provides superior penetration into tight joints and fissures providing a water-tight grouted rock mass. TamCrete ultrafine cements are typically used for stabilisation or consolidation of soils where standard ce¬ment types are not suitable due to their larger grain size. Normet Ultrafine cements have extended the range of soils that can be treated through permeation grouting with 80% of fine soils groutable with the UFC range of products.

Injection Resins

Injection resins have been used extensively in mining, civil engineering and the general building industry for many years and continue to play an important role in controlling or preventing water ingress, binding and improving soils through to rock consolidation and rock strata grouting. Our resins have been designed specifically for these applications and comply with country and site standards and more importantly, environmentally safe and user friendly!

Normet’s water control resins are used throughout the full cycle of construction. From underground excavations such as shafts, tunnelling and basements through to above ground injection on bridges, roof structures to viaducts. In fact, our resins are used wherever water is a problem and needs to be controlled or permanently resolved.

Normet’s range of polyurethane silicate resins are new generation systems used predominantly in the mining and tunnelling sector. Our Tampur 116T is a two component 1:1 ratio resin that reacts to form a non-expansive, solid compound that gains considerable adhesive, compressive and tensile strength within minutes. Ideal for injection into high convergence zones in deep mining or tunnel excavations to improve rock strength capability and as a binder for loose rock formation. Tampur 116T is also used extensively to secure rock and cable bolts allowing for early tensioning.

RBG (Rock Bolting Grout) is ideally suited for securing all type of rock bolts where early tensioning/loading is required along with full rock bolt encapsulation.
Tampur RBG is available in varying grades to suit both an automated or manual injection process and to allow for local ambient and rock formation temperatures. Tampur RBG incorporates a gelling agent that produces a non-sag resin once the two components are mixed and injected.

Tampur 117 is designed for cavity filling in hard rock mining, goff filling in coal workings to general void filling for tunnelling and civil engineering projects. Tampur 117 reacts within seconds to form a high expansive, lightweight foam, which is economical, non-toxic, fire resistant and user friendly.

Bolting

Rock bolts are an essential part of these systems and have to be efficient, reliable, easily installed with standard equipment and reduce the need for downstream rehabilitation. Our team at Normet’s Rock Reinforcement business line are continuously developing new innovative products that can help to solve some of the toughest challenges.

Our D-Bolt is widely used as part of the ground support system in some of the largest and deepest mines and tunnels around the World. Our recently developed and patented Locally Anchored Self Drilling Hollow Rock Bolts in combination with our construction and mining chemicals, offer innovative solutions to areas where conventional systems are not delivering results. In addition, we are devoting time and resources to further develop the next generation of rock reinforcement systems, creating even safer underground environments.

The D-Bolt represents the new generation of energy-absorbing rock bolting systems, specifically designed for efficient and reliable rock reinforcement, in both squeezing and burst-prone strata conditions. Normet’s patented D-Bolt technology is based on a smooth steel bar with a number of anchors along its length. The D-Bolt is constantly being use as a vital rock reinforcement safety device at leading mines throughout the global mining community.

The newest addition to the D-Bolt family is our Connectable D-Bolt, a system that is extendable through specially designed couplings. This bolt type is especially effective for smaller profile spaces where there is a need for longer bolt anchoring offering an alternative to cable bolts. Normet’s connectable D-Bolt® has the same features as our standard D-Bolt® model with the couplings offering both an operational and functioning role.

For areas where ground conditions are very difficult and demanding, Normet designed an innovative, patented bolt combining the features of the Self Drilling Anchor (SDA) and D-Bolt. Normet produces two types of anchor taking into consideration design and load bearing capacity. For the North American mining market, Normet designed the bolt to reflect Nevada mine conditions. We call this the SDDB – Nevada type. The anchor is a 2400mm long Self Drilling Hollow Bar made from a single piece seamless tube with a diameter of 32mm. The thread is ISO R32 rolled with uneven length from each side. The material for the SDDB Nevada type has been carefully selected to respond to our customer’s inquiry for yield load and elongation at break. The bolt is typically used for single length applications although it can be extended with couplings to reach the desired length where necessary. This anchor utilizes a drill bit and longer root threaded section for anchorage.

Source: Normet Group Oy

                     

01.02.2019 (3121 Clicks)

Vale informs on the Hiring of independent Office to assist in the Investigation of the Causes of the Brumadinho Accident

Vale SA informs that it has hired the law firm Skadden, Arps, Slate, Meagher and Flom LLP ('Skadden') to select and work together with a panel of experts to evaluate the causes of the rupture of Dam I in Brumadinho. The office will provide advice to Vale on various legal issues arising from the breakdown of Dam I, including regarding certain initiatives that the company may take in response to the breach.