Patent ID: 8809228

Claim:
An oil adsorbent particle, comprising: inorganic particles; and a polymer disposed on a surface of the inorganic particles, disposed between the inorganic particles, or both; wherein the oil adsorbent particle has a porous structure; a content of the inorganic particles is 50% to 97% by volume relative to the inorganic particles and the polymer; and a cross-sectional area of the inorganic particles in a cross-section of the oil adsorbent particle is 30% to 60% relative to an area of the cross-section of the oil adsorbent particle, and wherein the oil adsorbent particle is made by a process of mixing the inorganic particles, the polymer, and a solvent to obtain a slurry solution; and spraying the slurry solution in an environment whose temperature is higher by at least 30° C. than the boiling point of the solvent.