[9] For we are God's coadjutors: you are God's husbandry; you are God's building. [10] According to the grace of God that is given to me, as a wise architect, I have laid the foundation; and another buildeth thereon. But let every man take heed how he buildeth thereupon. [11] For other foundation no man can lay, but that which is laid; which is Christ Jesus. [12] Now if any man build upon this foundation, gold, silver, precious stones, wood, hay, stubble: [13] Every man's work shall be manifest; for the day of the Lord shall declare it, because it shall be revealed in fire; and the fire shall try every man's work, of what sort it is. [14] If any man's work abide, which he hath built thereupon, he shall receive a reward. [15] If any man's work burn, he shall suffer loss; but he himself shall be saved, yet so as by fire.(1 Cor. 3)
Observe: the inferior works of the believer are burned at his judgment, and he, purified, enters heaven. That is the essence of Purgatory.
There are at least several lines of evidence that contradict your assertion that this passage is speaking of purgatory.
1. There is no mention of bodily suffering.
2. There is no mention of any sort of heavenly vision.
3. The fire itself is being applied to the WORKS of the believer, not the believer himself.
4. This judgment clearly happens at the day of the Lord (a singular yet future event), not distributed across time at the death of each believer.
5. It is the work that is being burned, not the believer.
6. The context of the passage is reward, and loss of reward, not punishment for sins not atoned for.
This passage in no way contributes to the doctrine of purgatory.