Method for determining content of large flaky graphite in flaky graphite ore

The invention discloses a method for determining the content of large flaky graphite in a flaky graphite ore. The method comprises the following steps: crushing the ore without destroying graphite flakes through using heat cracking fragmentation to realize dissociation of graphite and gangue mineral, and dissolving the gangue mineral in a mixed acid. Finally obtained graphite has high purity, and basically keeps the original occurrence granularity of the raw ore. The method can be used for determining the content and the granularity distribution of the large graphite flakes, and can accurately reflect the granularity characteristic of graphite in the graphite raw ore, and a determination result is helpful for accurately assessing the values of the graphite ore. 本发明公开了种测定鳞片石墨矿中大鳞片石墨含量的方法。该方法利用热裂破碎，在不破坏石墨鳞片的情况下粉碎矿石，实现石墨与脉石矿物的解离，再用混合酸溶解掉脉石矿物，最后得到的石墨不仅纯度高，并且基本保持在原矿石中的原始赋存粒度，用于测定石墨大鳞片含量和粒度分布，可准确反映石墨原矿中石墨的粒度特性，测定结果有助于更准确的评估石墨矿的价值。