可持续采矿的长期解决方案| SMS设备-全国最大的快3平台

上个月, we looked at interim strategies for mines as they move forward toward net zero carbon emissions. In this issue, we look at electrification, enabling mines to operate on 100% renewable energy.

"There's a big push for zero emissions or becoming carbon neutral,布莱斯·肖特说, 小松的北美销售和市场经理. 目前, the only way to achieve zero carbon emissions is with electric machines powered by 100% hydroelectricity."

Here are the key points we picked up from Bryce in our conversation this month.

电气化是绿色且具有成本效益的.

Much of the discussion about electrification in mines is understandably about its role in addressing the urgent need to curb climate change. 最新的电动机器, 然而, are not only greener but significantly less expensive to operate than their diesel counterparts.

布莱斯: 电ly powered hydraulic shovels are identical to their diesel counterparts. The only difference is they use electric motors instead of diesel engines to drive the hydraulics. 产能和经营没有变化, and the equipment can integrate easily into existing operations. It also makes it relatively easy to compare electric and diesel from a cost perspective.

Approximately sixty percent of the operating cost of a diesel machine is fuel - that may be even higher with the current fuel prices - so that difference adds up very quickly. 另外, 电动机器的驱动系统需要较少的维护, 这意味着更少的停机时间. 电动机的设计寿命与机器的设计寿命相同, 而柴油发动机每18小时就需要重新组装一次,000 to 25,000小时. So, there can be many diesel engine overhauls to the life of one electric motor.

把所有这些放在一起, we see a cost per ton of an electric machine to be approximately 45% less than its diesel counterpart. So, an electric machine can typically pay for itself in two to three years.

供电是一个巨大的挑战.

小松 and other vendors have electric machines deployed across the globe. The key to expanded adoption will be supplying them with sufficient electric power from renewable sources.

布莱斯: 小松 Electric machines have been produced since 1984 and are becoming widely popular today. The big issue is the cost of the electrical infrastructure required to supply power. Supply from a hydro-powered utility is ideal – that's 100% carbon free renewable energy. Mines, 然而, are often in remote areas of the world and often cost-prohibitive to bring power.

Some mines have utility power but not enough supply to run large machines efficiently. 例如, 如果你用的是小松PC7000, that's over 3500 horsepower or 2500 kilowatts of full load power. So, it takes a lot of electrical capacity to power these machines.

Electric machines move at the same speed as the diesel counterpart, approximately 2.5 kph, so an attached cable doesn’t slow the machine’s travel performance. The mobility of the diesel could be argued against its cable dependant electric equivalent, 但其他好处，比如运营成本, 环境影响, 生产力, and zero emissions can far be outweighed if the mine has the electrical infrastructure to support its operation.

正如我们在展会上看到的, batteries and hydrogen fuel cells are also technologies we expect to see much more of in the future. Other technologies on the horizon to see sites produce their own carbon-free electricity, will undoubtedly help push the interest of electric hydraulic shovels even higher.

就地发电将发挥重要作用.

Much of electrification will be about generating sustainable power on-site.

布莱斯: Some of the larger customers have significant power or even power plants on site. 为他们, 电气化显然是一种省钱的方法, but that still leaves the issue of power from environmentally sustainable sources.

Hydrogen fuel cell power plants are a zero-emission alternative that many people are talking about, 但风能和太阳能也是如此. 大多数仍处于开发周期的早期阶段. 然而, 小松成立了温室气体(GHG)联盟, 我们的一些大客户也参与其中, where partners exchange information on bringing these innovations to market more quickly.

Another possibility is small modular reactors (SMR)s - mini nuclear reactors that produce no emissions. I understand that the Alberta government recently announced they are working with developers on such a project.

改造是一个可行的选择.

More and more customers are inquiring about converting a hydraulic machine from diesel to electric, 在许多情况下，哪一个可能是一个可行的选择.

布莱斯: 我们可以把任何柴油机改装成电动机. The cost of converting, 然而, is between 40% and 60% of a new machine. You also need to factor in the efficiency gains from newer designs, 但在某些情况下，买一台新机器可能会更便宜.

底线:

发电仍然是最大的挑战, 但随着其他行业对清洁能源的需求, the electrification trend will likely accelerate over the next decade. Today's electric 矿业 machines produce zero emissions and can operate on energy derived from 100% carbon zero or neutral renewable sources at full capacity. 全国最大的彩票平台 will be actively working with leading mines as they push the frontiers of sustainability.