Sandvik is a global company founded in 1862 by Göran Fredrik Göransson in Sandviken, Sweden. Sandvik is a high-technology engineering group in tools and tooling systems for metal cutting, mining, construction equipment, products in advanced stainless steels and special alloys. Sandvik has about 47,000 employees in 130 countries, with annual sales of approximately SEK 87 billion . Wikipedia.
Manouchehri H.R.,Sandvik AB
Minerals and Metallurgical Processing | Year: 2014
Pyrrhotite (Po) is one of the most abundant sulfide minerals in processing industry and must be rejected in most cases. Particularly, Po rejection and its selectivity against pentlandite (Pn) have long been a challenge due to similarities in the mineral composition of the two minerals and the collectorless flotation characteristics of Po. Xanthates have been widely used to promote sulfide mineral flotation; however, in the presence of xanthates, the redox potential established at the mineral/solution interface is most important, determining the flotation performance. In this paper, the importance of electrochemistry in Po and Pn flotation has been demonstrated and a comprehensive study was conducted on two different feed streams (i.e., magnetic concentrate and scavenger cleaner streams, containing magnetic and nonmagnetic forms of Po, respectively), from Vale's Clarabelle Mill in Sudbury, Ontario, with an objective to determine if improvements in Po rejection and Pn recovery could be achieved by controlling pulp electrochemistry. By conducting a series of flotation tests under different Eh conditions and reagent usage schemes, it was revealed that higher Po content in the magnetic stream may protect Pn from being oxidized, improving Pn recovery. The results indicated that at low oxidizing pulp chemistry, the rest potential for the Pn is still high enough to allow the formation of dixanthogen to promote its flotation. Using a Pt electrode, it was found that by controlling pulp potential at -50
Agency: Cordis | Branch: FP7 | Program: JTI-CP-FCH | Phase: SP1-JTI-FCH.2013.3.2 | Award Amount: 2.86M | Year: 2014
This project combines European know-how in single cells, coatings, sealing, and stack design to produce a novel 1 kW SOFC stack of unprecedented performance, together with the proof of concept of a 10 kWe SOFC stack. Improvements over the state of the art in cost, performance, efficiency, and reliability will be proven, covering all top-level objectives mentioned in the topic. The stacks will be developed according to system integrators requirements guided by an industrial steering group. The target application of the development is stationary and residential combined heat and power production based on natural gas, and will form the basis for Elcogen Oys commercial SOFC stack technology. All manufacturing methods, stack designs, and materials are chosen so that they are suitable for mass production and enable 1000 /kW profitable stack price, which is a significant improvement to current state of the art. These methods, designs, and materials have been demonstrated successfully in small-scale and require the scale-up to suit manufacturing of 10 kWe SOFC stacks. For example, high performance of Elcogen cells and short stacks were already demonstrated with 100x100 mm2 cell size, but in this project cells and stack will be further improved and scaled up to larger 120x120 mm2 size. The project is based on the products of industrial partners and motivated by their interest to consolidate an optimized supply-chain and subsequently commercialize a high-performance product at very sharp prices. To this effect, the activity will pay great attention to designing the stack for mass production processes. One industrial partner is involved for each key function: Elcogen AS (cells), Elcogen Oy (stack assembly and production), Sandvik (interconnects and coatings), and Flexitallic Ltd (sealing). Selected research institutions complete the partnership to focus the development process towards a reliable product.
Agency: Cordis | Branch: H2020 | Program: RIA | Phase: FoF-01-2014 | Award Amount: 4.20M | Year: 2015
Miniaturization, advanced high performance materials and functional surface structures are all drivers behind key enabling technologies in high added value production. It is in such areas that ultrashort pulse lasers have enabled completely new machining concepts, where the big advantages of laser machining are combined with a quasi non-thermal and therefore mild process, which can be used to machine any material with high precision. An important obstacle however that hinders the full exploitation of the unique process characteristics, is the lack of a smart / adaptive machining technology. The laser process in principle is very accurate, but small deviations, e.g. in the materials to be processed, can compromise the accuracy to a very large extend. Therefore feedback systems are needed to keep the process accurate. Within this project the goal is to develop an adaptive laser micromachining system, based on ultrashort pulsed laser ablation and a novel depth measurement sensor, together with advanced data analysis software and automated system calibration routines. The sensor can be used inline with the laser ablation process, enabling adaptive processes by fast and accurate 3D surface measurements. The integrated sensor can be used to: measure the surface topography while machining a part, in order to adapt the micromachining process, leading to highly increased machining accuracies and no defects, measure the surface topography before machining, to scan for existing surface defects that can be removed in an automatically generated machining process, measure complex shaped objects prior to machining, to precisely align the machining pattern to the workpiece, quickly validate results after machining. Therefore, the main objective of this project is to develop a sensor based adaptive micro machining system using ultra short pulsed lasers for zero failure manufacturing.
Sandvik AB | Date: 2015-06-11
The present disclosure relates to a flushing system and a method of controlling the feeding of flushing fluid. The flushing system includes a pump unit for feeding pressurized flushing fluid to a feed duct connected to a rock drilling machine. The flow rate of the flushing fluid to be fed is controlled by controlling the pumping of the flushing fluid. The flow rate is determined by one or more sensing devices.
Sandvik AB | Date: 2015-10-09
The disclosure relates to a rotation unit, rock drilling unit and method for rock drilling. The rotation unit includes a main shaft that is rotated around its longitudinal axis by a rotating motor. The main shaft includes a tubular outer shaft and an inner shaft arranged inside the outer shaft. The outer shaft is supported by a body of the rotation unit and is configured to transmit axial forces, whereas the inner shaft is configured to transmit rotation and torque.