Africa's richest man is expected to launch next week what he foresees to be the continent's largest initial public offering (IPO), seeking to raise $1.6 billion from his Nigerian oil refinery while giving ordinary people a chance to buy in.

Here are some key things to know about the share sale and Aliko Dangote's refinery, which operates on the outskirts of Lagos.

What is the IPO about?

The IPO, which goes live Sept. 14, aims to attract up to 10 million shareholders across Africa.

Dangote Petroleum Refinery & Petrochemicals will offer investors the chance to buy as few as 10 shares at 525 naira each, potentially raising 2.15 trillion naira ($1.6 billion).