Refiner's rhymes with:
refiners, refiners', refiners, refiners', refiners, refiners', decliners, designer's, designers, designers', dinars, diners, liner's, liners, liners', meiners, miner's, miners, miners', minors, niners, niners', refiners, refiners', reiner's, reiners, shriners, signers, steiner's, whiners
Refiner's sounds like:
refineries, refiners, refiners', refinery's, revenuers