força de perfuração hidráulica
FAQs
FAQs
FAQs
As a merit in the mining of rock, the drilling rig has to be mentioned. In addition, the drilling rig can also be used as a breaker to break up hard layers such as concrete. According to its power source, the rock drill can be divided into four categories: pneumatic rock drill, internal combustion rock drill, electric rock drill and digging and changing drill.
2. Increased Accuracy The DTH method offers superior hole quality, producing straighter boreholes with less deviation. This precision is vital for applications that require exact placement of blast holes or geothermal probes.
The innovation behind the ZJ slurry pump lies in its hydraulic design. It is engineered to achieve high efficiency in the transfer of slurries, reducing both energy consumption and operational costs. Available in different sizes and designs, the ZJ pump can be tailored to meet the specific demands of various applications, including dredging, tailings management, and waste handling.
The applications of mining slurry pumps are diverse. Their primary function is to transfer slurries from the point of extraction to processing facilities. In this stage, the slurry contains valuable minerals that need to be refined and extracted. Slurry pumps are also crucial in the dewatering process, where the goal is to remove excess water from extracted materials. This not only improves the efficiency of material handling but also protects the environment by reducing the risk of contaminated water discharge.
2. Mining Operations In mining, these pumps handle slurries that consist of water, rock, and other materials. They help in the dewatering process and the transportation of waste materials.
DTH drilling refers to a method where the drilling bit is located at the end of a drill string, below the surface of the ground. This technique is distinguished by the use of high-performance percussion hammers, which are positioned on the drill bit. DTH drilling involves the use of compressed air to deliver rapid impacts, breaking rock into smaller fragments. This method is particularly effective in hard rock formations, making it a preferred choice for mining operations and various drilling applications.
④ Ink industry: titanium dioxide is also an indispensable white pigment in advanced ink. The ink containing titanium dioxide is durable and does not change color, has good surface wettability and is easy to disperse. The titanium dioxide used in the ink industry includes rutile and anatase.
Prof Maged Younes, Chair of EFSA’s expert Panel on Food Additives and Flavourings (FAF), said: “Taking into account all available scientific studies and data, the Panel concluded that titanium dioxide can no longer be considered safe as a food additive . A critical element in reaching this conclusion is that we could not exclude genotoxicity concerns after consumption of titanium dioxide particles. After oral ingestion, the absorption of titanium dioxide particles is low, however they can accumulate in the body”.
Pigmentary TiO2 particles are approximately 200-350nm in dimension and this form accounts for 98 percent of total production. It is used mainly for light scattering and surface opacity applications. It is used as a base for various colour paints or as a standalone ‘brilliant’ white.
The committee could not finalize the assessment of some other flavoring agents, requiring further information. JECFA highlighted the importance of receiving complete data submissions from the sponsors for conducting the safety evaluation.