I have not heard anything about this( with out cell sorting).Hematopoietic Stem and Progenitor Cells (CD34+) frequencies in Human Peripheral Blood between 1000-7000 cells /1 ml blood . so you can use sorting kits for CD34+ stem cells isolation from cell line or primary cells .
To isolate CD34+ cells without FACS sort them, there's the possibility of using some of the column-based kits from MACS Miltenyi Biotec. Here you have the link to the product (1) and its latest kit update (2), both for human samples.
Remember that you should check if your cell line of interest is suitable for these kits; if not, I hope you can find something similar that fits your interests.