At least "At least" is the only correct variation that you should write. It makes sense as two words because you have to keep the preposition separate from the word "least." This allows us to make the meaning of the phrase much clearer. According to Google Ngram Viewer, "at least" is the only acceptable choice of the two.

 · Downstream Beneficiation Case Study: Australia 4 Graph 1. Trends in the Iron and Steel Industry 1921-1930 This graph was created from data sourced from the Australian Bureau of Statistics

 · Oct 1 2014. The beneficiation process can be defined as a treatment process of ore which results in a more concentrated form of the product. It is often used in the preparation of iron ore for smelting. This is an essential process as it helps improve the yield from a deposit of ore, thereby increasing the potential profits that can be obtained ...

 · However, this chemical process consumes more chemicals, treatment time, and energy, which limits its application further. Therefore, an attempt has been made to chemically beneficiate this coal cost-effectively with …

Gangue is removed from the phosphate ore through beneficiation, a process which includes screening at varying size fractions, washing and flotation. During phosphate beneficiation, producers use ArrMaz's anionic flotation …

at least definition: 1. as much as, or more than, a number or amount: 2. used to reduce the effect of a statement: 3…. Learn more.

 · At least We use at least (and with more emphasis at the very least) to talk about a minimum number or amount, meaning 'no less than': There were at least twenty people there. It'll cost you £3,000 at the very least. We also use at least to express a minimum of what we expect to happen, usually when we are annoyed about something:

New technologies of coal beneficiation and uses of coal are mentioned. Emphasis is laid on the development of new methods of coking, heat and power generation, coal gasification …

 · A frothing agent such as pine oil, alcohol frother, or cresylic acid added to the slurry as it discharges from the conditioner is also used. The separation between low ash coal and high ash refuse is efficiently …

 · Phosphate Beneficiation Process. Large scale mining and processing of phosphate is essential for operating at a profit. In the Florida area, Phosphate Beneficiation by flotation unlocked the door to vast …

Sample Preparation – drying, dewatering, and mixing of samples Comminution – rock size reduction by crushing and grinding Size Classification – screening, de-sliming, cycloning Gravity Concentration – separation exploiting the differences in specific gravity of minerals via the use of centrifugal concentrators, shaking tables, and spirals

 · Less time dedicated to maintaining the environment increases your team's efficiency and productivity. 4. Control independence and DevOps. Since the virtualized environment is segmented into virtual machines, your developers can quickly spin up a virtual machine without impacting a production environment.

 · A feeling of impending doom. On rare occasions, penicillins can cause acute interstitial nephritis, an inflammatory kidney condition most often caused by an abnormal immune reaction to medications. Symptoms include nausea, rash, fever, drowsiness, diminished urine output, fluid retention, and vomiting.

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 · Before the beneficiation of copper ores, crushing and grinding are required. The bulk ores are crushed to about 12cm by a jaw crusher or a cone crusher. Then the crushed materials are sent to the grinding equipment, and the final particle size of the copper ore is reduced to 0.15-0.2mm. Copper ore crushing process. 1.