The arrests have been carried out since June 1 across the west African country and particularly in the central Ashanti region, a major gold mining hub.
"I believe by the middle of next week we should have repatriated them," Michael Amoako-Atta, a spokesman at the Ghana Immigration Service told AFP.
He added that some of the detained Chinese nationals were to be presented at a magistrates court in Accra today, where authorities would seek permission to hold them in custody until they are sent home.
The arrests came a month after President John Dramani Mahama launched a taskforce to crackdown on illegal mining.
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Ghana is Africa's second biggest gold exporter, behind South Africa, but the sector has long been plagued by unregulated activities.
Many Chinese are involved in small-scale mining, often crossing illegally from neighbouring countries to work on concessions. Ghanaian law prohibits foreigners from engaging in small-scale mining.
Known as "galamsey", illegal mining is blamed for exacerbating land conflicts, causing runoff that pollutes water supplies and putting miners at risk of injury.