Abstract: The invention relates to a method for blast cleaning using ilmenite tailings particles between 10 mesh and 250 mesh as impact abrasive material. Ilmenite tailing particles are a waste product obtained in a beneficiation plant of an ilmenite ore (FeTiO3) metallurgical complex. The particles are preferably washed, dried, and screened before being used as impact abrasive material. They are separated in particle-size range to improve their efficiency for blast cleaning.

Abstract: The invention relates to a method for blast cleaning using ilmenite tailings particles between 10 mesh and 250 mesh as impact abrasive material. Ilmenite tailing particles are a waste product obtained in a beneficiation plant of an ilmenite ore (FeTiO3) metallurgical complex. The particles are preferably washed, dried, and screened before being used as impact abrasive material. They are separated in particle-size range to improve their efficiency for blast cleaning.

Abstract: A device for driving a stake into the ground, particularly a foundation stake of new or existing buildings. The device may also be used for stabilizing, raising and shoring foundations, or for any other similar application. The device has two hydraulic jacks on which are secured two rods, the hydraulic jacks and the rods being parallel to the driving axis of the stake. The device has also a driving member provided with a hammering head continuously in contact with the upper end of the stake during the power stroke of the hydraulic jacks Bores are provided in the hammering head in which the rods are inserted. Latches facing each other are provided in the hammering head to prevent segments of larger diameter on the rods from going through the bore during the return stroke but not during the power stroke, therefore allowing the stake to be driven by the hammering head during the return stroke.