Global demands manufacturer dual equipment lines

 

This two-tiered global demand is putting pressure on equipment manufacturers to develop dual equipment lines, with one set of models designed for use in mature markets, and another for developing countries.
For instance, the ball mill manufacturer has introduced two new ranges of wheeled loaders this year - there is the Mega range, which targets the Middle East and African markets, and then the Dash-3 range, which have Tier 4 Interim/ Stage IIIB-compliant engines and are targeted at North America and Europe. Feldspar has been separated from silica by cationic collector using hydrofluoric acid as an activator of feldspar. Recently, one of the authors developed a new flotation process separating feldspar from quartz without using hydrofluoric acid. Presently, some silica sand mills are operating to introduce this process in Japan.
The new Dash-3 machines - the DL300-3, DL350-3, DL420-3, Out of the cylinder, the ball up to a certain height along the whereabouts of the parabolic trajectory, in Paola state. Have greater impact into the falling point, ore was crushed by the impact, the highest grinding efficiency. Exceed a certain limit (high speed) when the mill speed, ball rotation with the cylinder instead of the whereabouts of, in the centrifugal operation.
DL450-3 and DL550-3, with bucket capacities from 3.0 m3 to 5.5 m3 - are powered by Scania diesel engines that use selective catalytic reduction (SCR) to meet the strict emissions rules. The cone crusher machines also feature technology including three engine working modes (Eco, Normal and Power), a torque-converter-cut-off system and a new ZF five-gear transmission.
As Doosan has demonstrated with its latest wheeled loader and excavator launches, this pressure is resulting in the production two separate machines that essentially perform the same task in different parts of the world.
In this flotation, feldspar is floated from silica using normal alkyltri-methylene diamine acetate together with sodium petroleum sulfonate as collectors in a hydrochloric or sulfuric acid circuit of about pH 2. From fundamental studies, it was found that, though the aliphatic diamine by itself did not adsorb on feldspar sufficiently to give a satisfying flotation in acidic circuit., the adsorption of collector was promoted by the simultaneous use of petroleum sulfonate and resulted in sufficient flotation of feldspar. On the other hand, quartz did not float in this flotation process.
The application of this flotation was attempted for some types of natural samples and satisfying results were obtained. Further, an example of practical plant was introduced and the advantages in the process are emphasized.