The initial public offering of the Dangote Refinery is expected to begin within the next 10 to 12 days, according to the refinery’s owner, Aliko Dangote.

Dangote disclosed this on Thursday while speaking to investors and analysts during a visit to Botswana, as the $20 billion refinery prepares for what could become one of Africa’s biggest stock market listings.

The offering is expected to raise about $5 billion, giving investors an opportunity to acquire a stake in the 650,000-barrel-per-day facility.

Dangote also revealed plans to significantly expand the refinery’s capacity. He said the company aims to more than double production capacity to 1.4 million barrels per day.

The Lagos-based refinery reached its full nameplate capacity of 650,000 barrels per day in February and has subsequently recorded production of as much as 700,000 barrels per day during testing.

The planned IPO comes as refining profitability has strengthened, partly due to disruptions in global fuel markets linked to tensions in the Middle East, which have increased demand for alternative sources of petroleum products.

Beyond the refinery listing, Dangote said Dangote Cement is likely to pursue a secondary listing on the London Stock Exchange in October. The move is expected to improve the cement company’s access to international investors and capital.

Dangote is also expanding his refining interests outside Nigeria. He said construction of a new refinery project on Kenya’s coast, in partnership with East African governments, is scheduled to begin on September 30.

The Kenyan project is expected to take up to three years to complete and will supply refined petroleum products to Kenya and other countries in the region, reducing their dependence on imported fuels.

It would represent the Dangote Group’s largest refining investment outside Nigeria.